Thursday, June 13, 2013



Vegetable oil and nuts 'fight prostate cancer': Swapping cakes for foods can stop disease spreading

At least the authors disclaim causal inferences.  The people on more "correct" diets were probably middle class and it was that which gave a better prostate outcome  -- as middles are healthier generally

Swapping to vegetable oils and nuts may increase a man’s chances of surviving prostate cancer.

A study found that those diagnosed with the disease early had a lower risk of the cancer spreading if they replaced animal fats found in processed foods – such as cake and pastries – with healthy vegetable fats.

One serving of oil-based salad dressing a day, equivalent to one tablespoon, was linked with a 29 per cent lower risk of potentially lethal prostate cancer and a 13 per cent lower chance of dying from any cause.

The US authors stressed the research involving 4,577 prostate cancer patients had revealed an association and could not necessarily prove a diet rich in oils and nuts was the cause.

In an online paper published by the journal JAMA Internal Medicine, they wrote: ‘Overall, our findings support counselling men with prostate cancer to follow a heart-healthy diet in which carbohydrate calories are replaced with unsaturated oils and nuts to reduce the risk of all-cause mortality.’

Of the men with prostate cancer enrolled into the study, around a fifth died from the disease over a period of about eight years. Another 31 per cent died from heart disease and almost 21 per cent from other cancers.

At the time they were recruited, all the men had non-metastatic prostate cancer, meaning the disease had not yet spread.

Information about the patients’ dietary habits was collected from questionnaires.

Swapping animal fats and carbohydrates for healthy vegetable fats, including olive and canola oil as well as oils from nuts, seeds and avocados, was found to have a significant impact on disease progression and death.

Men who replaced 10 per cent of their daily carbohydrate consumption with vegetable fats had a 29 per cent lower risk of developing deadly prostate cancer and a 26 per cent reduced risk of dying from any cause.

The study also showed that eating an ounce of nuts a day led to an 18 per cent lower risk of lethal prostate cancer and an 11 per cent lower risk of death.

Dr Erin Richman, from the University of California at San Francisco, said: ‘Consumption of healthy oils and nuts increases plasma (blood) antioxidants and reduces insulin and inflammation, which may deter prostate cancer progression.’

SOURCE





Babies of obese mothers are at a higher risk of premature birth, serious illness and death

The usual naivety.  Fatties were probably mostly working class and that give the adverse outcomes

Babies born to overweight women are more likely to be born prematurely, increasing the likelihood of serious illness and even death.

A study of 1.5 million births in Sweden between 1992 and 2010 found the danger of early delivery rose proportionally with the mother’s weight.

Women with the highest BMI (body mass index) also had the highest statistical risk of giving birth prematurely, and especially extremely early.

Compared to women of normal size, an extremely premature birth was 25 per cent more likely for overweight women and 60 per cent more likely for obese mothers.

For severely obese (BMI 35-39.9) or extremely obese (BMI 40 or more) women, the corresponding risk was doubled and tripled respectively.  Risks of very and moderately preterm deliveries also increased with BMI.

The findings published in the Journal of the American Medical Association are alarming with the obesity levels in Britain fast approaching those in the U.S.

Three in five adults are overweight or obese possibly explaining the 40,000 babies a year born prematurely, the highest in Europe.

Professor Sven Cnattingius, of the Karolinska Institute, Stockholm, said: ‘For the individual woman who is overweight or obese, the risk of an extremely preterm delivery is still small.

‘However, these findings are important from a population perspective. Preterm infants and, above all, extremely preterm infants account for a substantial fraction of infant mortality and morbidity in high income countries.’

In the study, his researchers calculated the women’s BMI (weight in kilograms divided by height in square metres) from information given at their first visit to prenatal care.

A BMI between 18.5 and 24.9 was assessed as normal, 25 to 29.9 as overweight, and 30 or more as obese.

Dr Cnattingius said a third of all pregnant women in Sweden are either overweight or obese, and this impacts the number of premature babies.

He said: ‘Overweight and obesity also increase the risk of maternal pregnancy complications including preeclampsia, gestational diabetes and Caesarean delivery.’

In Sweden there are about 100,000 births a year of which around 250 are extremely early, in that they are delivered more than 12 weeks before the expected date.

Another 500 are very premature (8 to 12 weeks too early), and 4,500 moderately so (4 to 8 weeks).

The study also found the risk was substantially explained by obesity-related diseases such as the severe pregnancy complication preeclampsia that endangers the health of both mother and child.

SOURCE



Wednesday, June 12, 2013



Teenagers who spend time in the sun are 'significantly' less likely to develop hay fever and eczema

But why?  Maybe less healthy children to start with are kept indoors and out of the sun

Teenagers who spend more time outside in the sun have a lower risk of hay fever and eczema, according to a new study.

Those who spend more than four hours per day exposed to sunlight on summer days benefit from decreased rates of both conditions, Australian scientists found.

‘Higher sun exposure during summer holidays and summer weekends in adolescence was associated with significantly reduced eczema and rye grass positive rhinitis,’ they wrote.

The team found that the benefit of sun exposure persisted after accounting for measured levels of vitamin D, the so-called sunshine vitamin which our body produces from sunlight on our skin, in participants.

This suggests the benefit stems from another mechanism, according to the researchers led by Dr Andrew Kemp at the Royal Children’s Hospital in Melbourne.

The study involved 415 participants, who were recruited at birth and followed until the age of 16.  Their average daily duration of sun exposure in summer months was recorded at eight and 16 years of age.

At 16, researchers also recorded whether they suffered from hay fever, eczema, asthma or showed any signs of sensitisation to allergens.

There was no significant association between sun exposure aged eight and any allergic disease or allergen sensitisation at 16.

But teens who spent more than four hours per summer day in the sun aged 16 had a significantly decreased risk of hay fever and eczema.

Asthma was not related to sun exposure, whether assessed through diagnosis by a doctor or use of asthma medications.

The authors, whose findings are published in the online version of the journal Paediatric Allergy and Immunology, said the reasons for the protective effect of sunlight were not certain.

They said one possibility is that ultraviolet (UV) irradiation can have effects on the immune system that might impact on the development of allergies.

A number of previous studies have shown that UV exposure can suppress the immune system and inflammatory activities.

But this does not explain the effect on hay fever, where the site of inflammation is not directly exposed to UV light.

‘It is possible that cells modulated by UV, following migration from the skin to other organs, might produce effects elsewhere,’ they wrote.

‘It has also been suggested sun exposure by inducing antimicrobial peptides may enhance antibacterial defences. This could benefit diseases such as eczema where bacterial colonisation of the skin is considered to play a significant role.’

They called for further studies in the area to consider both exposure to UV rays and vitamin D before sun exposure is recommended to reduce rates of allergic disease.

SOURCE







Breast screening 'doesn't cut deaths': Study of 40 years of mammograms show 'no evidence' they reduce chance of dying

Screening for breast cancer does not cut the chance of dying from the disease, a study claims.  The examination of 40 years of UK data produced ‘no evidence’ there was a greater fall in death rates in women who underwent mammograms.

In fact, the age group that showed the steepest fall in mortality rates were the under 40s – who are not eligible for the regular X-ray check-ups.

It is the latest study to cast doubts on the effectiveness of screening, with some experts now suggesting that advances in treatment are more likely to account for the better chances of survival.

The research was carried out by scientists from Oxford University’s Department of Public Health, who looked at the Oxford region before and after the introduction of the NHS’s screening programme in 1988.

Comparing the results with England as a whole, they found no evidence that death rates fell greater in screened women.

The greatest drop was among those under 40, where rates decreased by five per cent a year from 2000.

Lead researcher Toqir Mukhtar said although the two million women a year who undergo screening may still benefit because cancer can be detected earlier, the £75million annual cost of the programme should be reviewed.

The findings, published in the Journal of the Royal Society of Medicine, contrast with last year’s Department of Health review, which concluded that screenings cut relative mortality by 20 per cent.

Professor Michael Baum, a sceptic of screening, said: ‘The good news for women is that breast cancer death rates are falling, but it is almost entirely attributable to better treatment rather than screening.’

However, Eluned Hughes, of the charity Breakthrough Breast Cancer, said it was hard to ‘unpick’ the factors that contribute to improving survival rates.

‘It’s important that women have all the information available to them on the pros and cons of screening in order to make an informed choice that’s right for them,’ she said.

Baroness Delyth Morgan, of Breast Cancer Campaign, claimed the Department of Health’s ‘comprehensive’ review proves that screening ‘does save lives’.

And Professor Julietta Patnick, director of the NHS Cancer Screening Programmes, said check-ups play a ‘key role’ in giving women the best chance of receiving successful treatment.

‘All new evidence about the benefits and harms of breast cancer screening is kept under review to ensure that the breast screening programmes are based on the latest available evidence,’ she added.

SOURCE


Tuesday, June 11, 2013



Tomatoes could ease night-times for prostate patients by relieving pressure on the bladder

Too few details provided to check these claims

Tomatoes have already been credited with a host of health benefits – and now another one can be added to the list.  Lycopene, the antioxidant which makes tomatoes red, has been found to reduce age-related enlargement of the prostate and thereby pressure on the bladder.

The revelation will bring comfort to those men troubled by the need to visit the toilet frequently, especially at night.

Tomatoes – packed with vitamins, natural anti-inflammatories and other goodies – have been previously identified as helping to combat cardiovascular disease, stroke and prostate cancer.

The latest benefit emerged from research in Queensland, Australia.  A three-month study was carried out into the effect of lycopene in combination with other natural compounds.

A total of 57 men aged 40 to 80 were given pills containing active ingredients or identical dummy tablets. They were not told which ones they were taking.

Researchers found that the number of night-time visits to the toilet was cut by more than a third and overall bladder function was substantially improved.

Meanwhile, evidence has been growing about the benefits of a recently launched British supplement called Ateronon containing an artificial version of lycopene.

Research presented by Cambridge University at the prestigious American Heart Association showed it had a unique effect in improving blood vessel flexibility and reducing hardening of the arteries.

Ian Wilkinson, director of the university’s clinical trials unit, is confident that similar benefits will be gained in reducing the risk of prostate cancer and slowing the disease in men already diagnosed.

‘Ateronon could be more beneficial than natural lycopene because it is more easily absorbed by the body,’ Mr Wilkinson said. ‘We are designing a trial to prove that.’

Luis Vitetta, also a director at the  university, said lycopene has a similar  chemical structure to finasteride, the main drug used to treat benign enlargement of the prostate. ‘That may be the reason for the effect,’ he said.

A second newly-published study in Chicago has shown beneficial proteins in prostate cells were boosted when exposed to lycopene.

Project leader Richard van Breemen said a long-term study was needed on lycopene as it took time to have an effect.

SOURCE






Medical breakthrough for MS sufferers

In a breakthrough discovery, researchers have discovered a treatment capable of reducing the debilitating autoimmune response that occurs in people suffering from multiple sclerosis (MS).

When patients are diagnosed with multiple sclerosis, their bodies begin to attack the protein myelin, which insulates the body’s spinal cord, brain and optic nerves. As a result, MS patients experience symptoms such as numbness in their limbs, paralysis and sometimes blindness.

However, during a phase one clinical trial of a new treatment for MS patients, researchers were able to curtail the body’s attacks on myelin by 50 to 75 percent, while sustaining the functionality of the rest of the immune system.

Current treatments for MS seek to lessen the body’s autoimmune response to myelin, but this often results in decreased effectiveness of the entire immune system.

“Most therapies for autoimmune diseases employ approaches broadly called immunosuppressors – they knock down immune response without specificity,” study co-author Stephen Miller, professor of microbiology-immunology at Northwestern University Feinberg School of Medicine, told FoxNews.com.

“People can become highly susceptible to everyday infections and develop higher rates of cancer.”

Miller and his colleagues sought a more targeted ‘tolerance’ treatment that would leave the greater immune system intact while knocking out only the autoimmune response to myelin.

“In MS, the idea is to target autoreactive T-cells directed against myelin…which would (reduce) disease progression, but wouldn’t make patient susceptible to higher rates of infection,” Miller said.

In a study published in the journal Science Translational Medicine, a small group of MS patients were treated intravenously with an infusion of their own white blood cells, which had been engineered to carry billions of myelin antigens. Researchers hoped the cells would teach the body to stop attacking myelin.

Miller and his team needed to determine if the treatment, which was based on 30 years of previous research, could be safely applied in humans – and they were pleased to discover it could be.

“It was safe to infuse as many as 3 billion autologous cells that we collected and manipulated back into the same patient and didn’t trigger exacerbations,” Miller said. “Most patients didn’t show any increased signs of disease during the six-month follow up.”

Furthermore, the treatment did not seem to impede the larger immune system. Researchers tested this by analyzing whether or not each patient continued to retain their immunity to tetanus, for which all of the patients had previously been vaccinated.

“Among four patients receiving the highest doses (of autologous cells),  immune response to myelin antigens had diminished or gone away - but tetanus had not gone away,” Miller said.

This indicated that the immune system’s ability to fight other diseases after the procedure remained intact.

Though researchers caution that the study was too small to draw any significant conclusions, they are optimistic about the outcomes of larger studies and the ability of this treatment to help halt the progress of MS – particularly among recently-diagnosed patients.

“The idea is that if we’re able to intervene early enough in disease process, we can stop the autoimmune destruction and (the patient) will have little or no clinical deficit as result of earlier attacks before being diagnosed,” Miller said.

Researchers hope to receive funding to begin a phase two trial soon.

SOURCE


Monday, June 10, 2013



Breast really is best if you want a brainy baby (?)

Naive hi-tech nonsense. IQ is a strong predictor of breast-feeding and IQ  is strongly genetically inherited.  Control for IQ among the mothers would be needed if this were to tell us anything about breast feeding as such

Breast milk boosts brain development in babies by up to 30 per cent, according to a new study.

Children exclusively fed breast milk for at least three months have up to 30 per cent extra growth in the key parts of the brain which control language, emotion, and understanding, say scientists.

The study of under-fours showed children who have breast milk as part of their diet have a clear advantage when it comes to brain development.

Research carried out at Brown University, in the U.S., found that by the time the babies had reached their second birthday a discernible difference could be seen in their brain structure.

Dr Sean Deoni, an engineering professor and lead author, said: ‘We're finding the difference [in white matter growth] is in the order of 20 to 30 per cent, comparing the breastfed and the non-breastfed kids.’

Using Magnetic Resonance Imaging (MRI) brain scans were taken of the babies who had been fed a diet of breast milk in the earliest stages of their development, and of those who had been fed formula milk.

The scans showed that babies fed breast milk alone had the fastest growth in myelinated white matter - tissue packed full of long nerve fibres that link different parts of the brain that are used for learning.

The babies who were weaned on a diet of formula were found to have the least white matter.

Dr Deoni's team carried out the study to see how early the changes in brain development took place.

‘We show that they're there almost right off the bat,’ he said.
Scans show that babies fed breast milk alone have the fastest growth in myelinated white matter - tissue packed full of long nerve fibres that link different parts of the brain that are used for learning

Scans show that babies fed breast milk alone have the fastest growth in myelinated white matter - tissue packed full of long nerve fibres that link different parts of the brain that are used for learning

Researchers looked at the brains of 133 babies who were born on time and came from similar families.

By comparing the myelin in older and younger children they were able to calculate how breast milk influenced the development of white matter.

The researchers backed up the results of the scans with a set of basic cognitive tests that showed language performance, visual reception and motor control were all better in the breastfed children.

The team found that the longer the babies were fed with breast milk the more developed their brains were, especially in the areas of the brain associated with movement and coordination.

While the Brown study published in the journal NeuroImage is not the first to link breastfeeding with improved development in the young, Dr Deoni claimed it is the first time MRI scans have been used to compare the brains in breastfed and non-breastfed children.

Dr Deoni said: ‘I think it's astounding that you could have that much difference so early. I think I would argue that combined with all the other evidence, it seems like breastfeeding is absolutely beneficial.’

SOURCE






Food authoritarianism in national parks

No definition of "healthy" and no evidence that the preferred foods will have a positive health effect

How about some goat cheese with huckleberry coulis and organic watercress after you've worked up an appetite by hiking in a national park? Or maybe some juniper-smoked bison with arugula?

Interior Secretary Sally Jewell announced on Wednesday that as part of a new "Healthy Parks, Healthy People" initiative, America's national parks will offer visitors a greater variety of nutritious foods.

“Today, as part of the administration’s efforts to promote healthier choices, we are adding yet another reason to visit our national parks and increasing the number of healthy food options available to visitors at parks from coast to coast."

Jewell said the new initiative is in line with President Barack Obama’s “commitment to health and well-being” and First Lady Michele Obama’s “Let’s Move” campaign to fight childhood obesity.

I want to emphasize this is about choice,” National Park Service Director Jon Jarvis said at the event on the National Mall, where chefs from park concessions around the country cooked up samples. “American people like their choices."

But while visitors may have a choice, vendors do not: Concessionaires who renew their contracts with the government will be required to include at least two “healthy” options, according to Kathy Kupper, spokesperson for the Park Service. Vendors with existing contracts will follow the new guidelines on a voluntary basis until the contract comes up for renewal.

Executive chefs from national parks around the country prepared some of the offerings at an event on June 5, 2013 to announce new guidelines for park food vendors. (CNSNews.com/Penny Starr)

Jarvis said the changes don't mean park visitors must eat healthy food. Traditional fare such as hot dogs and chicken tenders will still be available from food vendors who already sell those items. But, added Jarvis, “There’s no reason to take a vacation from eating well when you visit a national park.”

Gerry Gabrys, one of several National Park food vendors attending the event, said customers want healthier foods.

Some of the fare served at Wednesday's event included “Free-range Chicken Breast with Sweet Potato Cake and Fennel Salad,” “Crisp Filo, Goat Cheese with Caramelized Pecans, Huckleberry Coulis and Organic Watercress,” “Juniper Smoked Bison Strip Loin with Arugula and Low-fat Horseradish Crème Fraiche,” and “Griddled Cumin-Scented Chesapeake Bay Seafood Taco.”

Those entrees are more likely to be served at restaurants in some of the bigger national parks, such as Yellowstone and the Shenandoah.

The new healthy food standards and sustainable food guidelines are spelled out in detail in a six-page document.

In addition to providing more nutritious food options, the National Park Service is encouraging park food concessions to incorporate locally grown or raised items, when available.

The new guidelines include the following:

-- 30 percent of beverages should have no added sugar.

-- Offer half servings or reduced portion servings when possible such as when items are prepared in bulk like pasta and soups and are served to order.

-- Offer coffee that is fair-trade certified and shade grown.

-- Where seafood option are offered, provide only those that are “Best Choices” or “Good Alternatives” on the Monterey Bay Aquarium Seafood Watch list, certified sustainable by the Marine Stewardship Council, or identified by an equivalent program that has been approved by the National Park Service.

-- For grab and go food establishments, ensure that healthier options are placed where they are noticeable and likely to be purchased.

-- Do not offer fried items as “specials” or “featured” items.

The guidelines will help the National Park Service meet "Action Goal #8 – Eat Well and Prosper,” the text states.

“Providing additional choices is good for our customers and good for our business,” said Gabrys, CEO of Guest Services, Inc. “All of us have seen a growing consumer demand for healthy food and we are committed to meeting the needs and desires of park visitors while keeping prices affordable.  The new guidelines include many efforts already underway by the industry and reflect the close collaboration and positive partnership we enjoy with the National Park Service.”

SOURCE


Sunday, June 09, 2013



Babies who eat FISH are less likely to develop allergies in later life

The usual correlational faith.  Given the prevalence of a   fish oil religion, it was preobably middle class parents who spent a lot on fish.  And they are healthier anyway

Babies regularly fed fish in their first year of life are much less likely to develop common allergies when they get older, new research shows.

Scientists who monitored babies' diets found many of those that ate plenty of fish early in life were much more likely to still be free of allergies 12 years later, when the study ended.

Their chances of developing eczema dropped by 22 per cent, and hay fever by 26 per cent.

The findings, published in the American Journal of Clinical Nutrition, suggest giving fish to infants as little as two or three times a month may be enough to substantially reduce their risks.

Eczema affects an estimated one in eight children in the UK.  It can cause red, itchy skin condition that can be very distressing and there are few very effective treatments.

In the worst cases, children have to be bandaged with cotton dressings from head to foot.

Hay fever, meanwhile, is thought to affect up to one in five youngsters. Both conditions are also linked with an increased risk of asthma.

Although previous research has suggested early exposure to fish in the diet could have a protective effect up to the age of four, researchers wanted to see if the benefits lasted even longer.

Experts at the Karolinska Institute in Stockholm, Sweden, tracked 3,285 babies to study their dietary intake at the ages of one, two, four, eight and 12.

They also looked at how many went on to develop allergies.

The results showed fish plays a big part in dietary patterns among Swedish infants, with 80 per cent consuming it at least twice a month.

Among these children, the risk of allergies dropped significantly compared to others that rarely or never ate fish.

However, the study did not examine exactly which type of fish had the most potent affect.

In a report on their findings researchers said: 'Regular fish consumption in infancy may reduce the risk of allergic disease up to the age of 12.'

SOURCE





HRT IS safe to combat menopause, say experts: After decade of controversy, benefits now thought to outweigh risks

More vindication of what I said from the beginning

Taking medication to reduce the symptoms of the menopause is safe according to medical experts.

They say hundreds of thousands of women have suffered unnecessarily as a result of the decade-long controversy over the effects of Hormone Replacement Therapy.

Fresh guidance from the British Menopause Society is seeking to reassure patients, saying the benefits of HRT outweigh any potential risk for women in their 50s.

They say GPs should prescribe the treatment to any woman who has unpleasant menopausal symptoms, such as hot flushes and mood changes. HRT is also known to provide bone protection in later life.

However, the debate is likely to rage on as The Royal College of Obstetricians and Gynaecologists continues to advise HRT only for women with serious menopausal symptoms for the shortest time possible.

After five years doctors are not expected to continue prescribing it without discussing potential risks.

Uptake of HRT halved after two studies linked it to an increased risk of heart disease and breast cancer. An estimated one million women in the UK stopped having the treatment.

Consultant Endocrinologist Dr Helen Buckler, from the University of Manchester, said the emerging consensus was that the benefits of HRT outweighed the risks for most women, and that GPs should consider the updated BMS advice when treating the condition.

Speaking at the Cheltenham Science Festival, she said the two studies linking HRT to breast cancer and heart disease were scientifically unreliable.

She said: 'The new advice is HRT should be used for a slightly wider age, if need be. If a woman has symptoms affecting the quality of her personal or professional life, then the benefits outweigh the risk.'

The scare began in 2002, when the US Women's Health Initiative study was halted three years early because researchers claimed women using HRT were at higher risk of breast cancer, heart disease and strokes.

This contradicted previous – and later – research which suggested it guarded against heart problems.
How the debate has raged

HRT is normally prescribed to menopausal women in their 50s, but in the WHI study, it was also given to women in their 60s and 70s who had gone through the menopause more than a decade earlier.

Shortly afterwards the UK Million Women Study, part funded by Cancer Research, said HRT doubled breast cancer risk, but a review last year said it was 'unreliable and defective'.

Cancer Research advice remains that there is still convincing evidence that women who take HRT have an increased risk of breast cancer. But Dr Buckler said the charity was 'out of step' and its approach had tended to 'put women off' taking the treatment.

Some younger doctors have never prescribed HRT because they wrongly believe the risks outweigh the benefits, experts have warned.

Jessica Harris, of Cancer Research UK, said there was 'convincing evidence' that women who take HRT have an increased risk of breast cancer, but that risk returns to normal around five years after stopping using it.

The BMS guidance is also opposed to the 'arbitrary' five year limit on treatment, and says it should be continued if symptoms persist.

The BMS – a registered charity and medical foundation – receives no government funding. Its medical advisory council comprises leading international experts in post reproductive health management, who draw up guidelines for health professionals.

SOURCE



Friday, June 07, 2013



Car Emissions Turn HDL Cholesterol from ‘Good’ to ‘Bad,’ Mice Study Shows

So mice should keep out of traffic

An international team of scientists has found that breathing car emissions triggers a change in high-density lipoprotein, sometimes called the ‘good cholesterol,’ altering its cardiovascular protective qualities so that it actually contributes to clogged arteries.

According to their paper published in the journal Arteriosclerosis, Thrombosis and Vascular Biology, in addition to changing high-density lipoprotein (HDL) from ‘good’ to ‘bad,’ the inhalation of car emissions activates other components of oxidation, the early cell and tissue damage that causes inflammation, leading to hardening of the arteries.

Emission particles such as those from vehicles are major pollutants in urban settings. These particles are coated in chemicals that are sensitive to free radicals, which have been known to cause oxidation. The mechanism behind how this leads to atherosclerosis, however, has not been well understood.

The team found that after 2 weeks of exposure to vehicle emissions, mice showed oxidative damage in the blood and liver – damage that was not reversed after a subsequent week of receiving filtered air. Altered HDL cholesterol may play a key role in this damaging process.

“This is the first study showing that air pollutants promote the development of dysfunctional, pro-oxidative HDL cholesterol and the activation of an internal oxidation pathway, which may be one of the mechanisms in how air pollution can exacerbate clogged arteries that lead to heart disease and stroke,” said senior author Prof Jesus Araujo of the University of California’s David Geffen School of Medicine.

One group of mice was exposed to vehicle emissions for two weeks and then filtered air for one week, a second was exposed to two weeks of emissions with no filtered air, and a third was exposed to only clean, filtered air for two weeks.

Study co-author Prof Michael Rosenfeld from the University of Washington said: “the biggest surprise was finding that after two weeks of exposure to vehicle emissions, one week of breathing clean filtered air was not enough to reverse the damage.”

Mice were exposed for a few hours, several days a week, to whole diesel exhaust at a particulate mass concentration within the range of what mine workers usually are exposed to.

After the exposures, the team analyzed blood and tissue specimens and checked to see if the protective antioxidant and anti-inflammatory properties of HDL were still intact. The scientists used special analytical laboratory procedures to evaluate how ‘good’ or ‘bad’ HDL had become. The team found that many of the positive properties of HDL were markedly altered after the air-pollutant exposure.

For example, the HDL of mice exposed to two weeks of vehicle emissions, including those that received a subsequent week of filtered air, had a much-decreased ability to protect against oxidation and inflammation induced by low-density lipoprotein (LDL) cholesterol, known as ‘bad’ cholesterol, than the mice that had only been exposed to filtered air.

Without HDL’s ability to inhibit LDL, along with other factors, the oxidation process may run unchecked. Moreover, not only was the HDL of the mice exposed to diesel exhaust unable to protect against oxidation, but, in fact, it further enhanced the oxidative process and even worked in tandem with the LDL to promote even more oxidative damage.

Researchers also found a twofold to threefold increase of additional oxidation products in the blood of mice exposed to vehicle emissions, as well as activation of oxidation pathways in the liver. The degree of HDL dysfunction was correlated with the level of these oxidation markers.

“We suggest that people try to limit their exposure to air pollutants, as they may induce damage that starts during the exposure and continues long after it ends,” said study first author Dr Fen Yin fron the Geffen School of Medicine.

SOURCE






Obese mothers may pass on health risks to grandchildren

More rodent wisdom

Obese women may be passing health problems such as heart disease and diabetes onto their grandchildren, a new study has suggested.
Researchers have discovered that conditions linked to obesity can skip a generation.

Researchers have discovered that conditions linked to obesity can skip a generation, leaving the children of moderately obese mothers apparently healthy.

However, their grandchildren are more likely to suffer from obesity and related diseases such as diabetes.

The findings provide growing evidence for how lifestyle choices by parents can pre-programme the genes of their children and even their grandchildren.

Dr Amanda Drake, senior clinical research fellow at the University of Edinburgh, where the work was carried out, said: “Given the worldwide increase in obesity, it is vital that we gain an understanding of how future generations may be affected.”

Around one in four adults in England are now considered to be obese while recent figures show that 22 per cent of four to five year olds are obese and 34 per cent of 10 to 11 year olds are obese.

During the study, published in the journal Endocrinology, used moderately obese female mice that were fed a high fat and sugary diet before and during pregnancy.

The first generation of mice were found to have few ill effects when fed a normal diet, but the second generation were more prone to obesity related diseases.

Scientists now believe this occurs due to the tweaks that occur to a person’s DNA while they are in the womb.

Known as known as developmental programming or epigenetics, these are thought to help prepare babies for the environment they are about to born into.

However, there is a growing body of evidence that shows these can at times also be detrimental by altering a child’s risk to cancer, obesity and other diseases.

Dr Drake said scientists now needed to look at how disease risk may be passed down not just from parents to their children but also to their grandchildren.

This should help public health organisations offer advice on how parents can change their lifestyles to protect their children and grandchildren from greater health risks.

She added: “Future studies could look at these trends in humans but they would need to take into account genetics, environmental, social and cultural factors.”

SOURCE



Thursday, June 06, 2013



Coffee Drinking as a Mental Disorder

Caffeine dependency does seem to be fairly common

Coffee-drinkers, beware: Your caffeine habit could induce a temporary mental disorder. The new edition of the mental health manual, the DSM-5, lists caffeine intoxication among the many disorders known to psychiatry.

Restlessness, nervousness, excitement, red face, gastrointestinal upset, muscle twitching, rambling speech, sleeplessness, rapid and irregular heartbeat and other symptoms may be familiar to many of us, but they are telltale signs of caffeine intoxication.

Specifically, a coffee drinker who experiences five or more of these symptoms during or shortly after consuming caffeine could be diagnosed with caffeine intoxication. The intoxication must also meet a standard DSM test: It must cause distress or impair the drinker's ability to function. [10 Odd Facts About Coffee]

This condition appears in both the old edition of the Diagnostic and Statistical Manual of Mental Disorders(DSM-IV) and the new DSM-5, but the new version, officially released Thursday (May 22), adds a related diagnosis: caffeine withdrawal, which describes the effects of stopping or dramatically reducing the pick-me-up habit.

Withdrawal symptoms include headache, fatigue, difficulty concentrating, depressed mood and other issues.

Caffeine is the most widely used, behaviorally active drug in the world, and some consumers may be unaware of their physical dependence on it, the DSM-5 notes.

"The symptoms of caffeine withdrawal are transitory, they take care of themselves," said Robin Rosenberg, a clinical psychologist and co-author of the psychology textbook "Abnormal Psychology" (Worth Publishers, 2009). "It's just a natural response to stopping caffeine, and it clears up on its own in short order."

The more long-standing diagnosis of caffeine intoxication also describes a temporary state, Rosenberg said, adding that she does not understand why either is included in the DSM.

Alan Budney, who served on the DSM-5 working group for substance-use disorders, explained the rationale for including caffeine withdrawal to Medscape Medical News in 2011.

"Caffeine is invading our society more and more. So there's concern enough to consider this topic seriously, even though it's probably one of the more controversial issues faced by our work group," said Budney, a clinical psychologist and professor of psychiatry at the University of Arkansas for Medical Sciences.

Caffeine withdrawal can affect someone's sleep, work and other aspects of his or her life, he said.

Typically, caffeine is used as a performance-enhancing substance. A bitter-tasting stimulant, it revs up the central nervous system, ideally making someone feel awake, alert and energetic. Caffeine is found in coffee, tea and chocolate, and is added to headache medication, energy and alcoholic beverages, and even water. 

Everyone from athletes to morning commuters to people looking to get in a long night of partying take advantage of this stimulant. Some benefits, such as a reduced risk of some cancers, have been linked to coffee drinking, but its active ingredient, caffeine, can also harm. In rare cases when consumed at high enough doses, caffeine can kill.

Between 2005 and 2009, emergency room visits associated with the consumption of caffeine-laden energy drinks, often in combination with alcohol and other drugs, increased tenfold.

Of course, caffeine is not the only chemical that can intoxicate. The DSM groups this disorder with others associated with substances ranging from alcohol and nicotine to cannabis and hallucinogens. The use of mind-altering substances like these can alter behavior, mental processes and cause physical symptoms.

SOURCE





Ketamine cousin rapidly lifts depression without side effects

Sounds hopeful.  "No side-effects" tends to be famous last words, however

GLYX-13, a molecular cousin to ketamine, induces similar antidepressant results without the street drug side effects, reported a study funded by the National Institute of Mental Health (NIMH) that was published last month in Neuropsychopharmacology.

Major depression affects about 10 percent of the adult population and is the second leading cause of disability in U.S. adults, according to the World Health Organization.

Despite the availability of several different classes of antidepressant drugs such as selective serotonin reuptake inhibitors (SSRIs), 30 to 40 percent of adults are unresponsive to these medications. Moreover, SSRIs typically take weeks to work, which increases the risk for suicide.

Enter NMDA (N-methyl-D-aspartate) receptor modulators. In the 1970s, researchers linked the receptors to learning and memory. Biotechnology and pharmaceutical companies in the 1980s attempted to apply chemical blockers to these receptors as a means to prevent stroke. But blocking these receptors led to the opposite effect—the rise of cardiovascular disease.

Research in the field dampened until a glutamate receptor antagonist already approved for anesthesia, and known on the streets as "Special K," ketamine, made headlines in the early 2000s.

Human clinical studies demonstrated that ketamine can ward off major and bipolar depressive symptoms within 2 hours of administration and last for several days.

Ketamine is fraught with serious side effects including excessive sleepiness, hallucinations, and substance abuse behavior.

"Ketamine lit the field back up," said Joseph Moskal, Ph.D., a molecular neurobiologist at Northwestern University and senior study author. "Our drug, GLYX-13, is very different. It does not block the receptor ion channel, which may account for why it doesn't have the same side effects."

Moskal's journey with GLYX-13 came about from his earlier days as a Senior Staff Fellow in NIMH's Intramural Research Program. While at NIMH, he created specific molecules, monoclonal antibodies, to use as new probes to understand pathways of learning of memory. Some of the antibodies he created were for NMDA receptors.

When he moved to Northwestern University, Moskal converted the antibodies to small protein molecules. Comprised of only four amino acids, GLYX-13 is one of these molecules. Previous electrophysiological and conditioning studies have suggested that GLYX-13, unlike ketamine, enhanced memory and learning in rats, particularly in the brain's memory hub or hippocampus. GLYX-13 also produced analgesic effects.

Using several rat behavioral and molecular experiments, Moskal's research team tested four compounds: GLYX-13, an inactive "scrambled" version of GLYX-13 that had its amino acids rearranged, ketamine, and the SSRI fluoxetine.

GLYX-13 and ketamine produced rapid acting (1 hour) and long-lasting (24 hour) antidepressant-like effects in the rats.

Fluoxetine, an SSRI that typically takes from 2-4 weeks to show efficacy in humans, did not produce a rapid antidepressant effect in this study. As expected, the scrambled GLYX-13 showed any antidepressant-like effects.

The researchers observed none of the aforementioned side effects of ketamine in the GLYX-13-treated rats. Protein studies indicated an increase in the hippocampus of the NMDA receptor NR2B and a receptor for the chemical messanger glutamate called AMPA.

Electrophysiology studies in this brain region showed that GLYX-13 and ketamine produced long-lasting signal transmission in neurons, known as long-term potentiation/synaptic plasticity. This phenomenon is essential in learning and memory.

The researchers propose how GLYX-13 works: GLYX-13 triggers NR2B receptor activation that leads to intracellular calcium influx and the expression of AMPA, which is then responsible for increased communication between neurons.

The results are consistent with data from a recent Phase 2 clinical trial, in which a single administration of GLYX-13 produced statistically significant reductions in depression scores in patients who had failed treatment with current antidepressants. The reductions were evident within 24 hours and persisted for an average of 7 days. After a single dose of GLYX-13, the drug's antidepressant efficacy nearly doubled that seen with most conventional antidepressants after 4-6 weeks of dosing. GLYX-13 was well tolerated and it did not produce any of the schizophrenia-like effects associated with other NMDA receptor modulating agents.

NMDA receptors need a molecule each of the amino acid chemical messangers glutamate and glycine to become activated. Moskal speculates that GLYX-13 either directly binds to the glycine site on the NMDA receptor or indirectly modulates how glycine works with the receptor. Resulting activation of more NMDA and AMPA receptors leads to an increase in memory, learning—and antidepressant effects.

By contrast, ketamine only blocks the NMDA receptor, but also increases the activity of the AMPA receptor. Knowledge of these mechanisms could lead to the development of more effective antidepressants.

GLYX-13 is now being tested in a Phase 2 repeated dose antidepressant trial, where Moskal and his colleagues at Naurex, Inc., a biotechnology company he founded, hope to find in humans the optimal dosing for the drug.

They also want to see if this molecule, and others like it, regulate other NMDA receptor subtypes—there are over 20 of them—and whether it will work on other disorders, such as schizophrenia, attention-deficit hyperactivity disorder, and autism.

"One could call NMDA modulators such as GLYX-13 'comback kids,'" said Moskal. "A toolkit that I developed in 1983 is now setting the stage in 2013 for the development of possible new therapeutics that may provide individuals suffering from depression with a valuable new treatment option."

More information: Burgdorf J, Zhang X-l, Nicholson KL, Balster RL, Leander JD, Stanton PK, Gross AL, Kroes RA, Moskal JR. GLYX-13, a NMDA Receptor Glycine-Site Functional Partial Agonist, Induces Antidepressant-LIke Effects Without Ketamine-Like Side Effects. Neuropsychopharmacology, April 2013. 38:729-742.

SOURCE

Wednesday, June 05, 2013



'Superfoods' shown to fight prostate cancer

The effect was on an indicator, not on cancer itself -- and an effect was shown not on people in general but on cancer survivors.  Lots of room for slippage there

Superfoods have been shown to fight prostate cancer, in a ground-breaking study.

Men who had been treated with surgery or radiotherapy for the disease were given a capsule containing essence of pomegranate, green tea, turmeric and broccoli.

At the end of a six-month trial, their PSA levels - a protein which is an indicator of the cancer - were 63 per cent lower than those who took a placebo.

While lab tests and small non-randomised studies have previously suggested that such foods, which are rich in polyphenol, have an anti-cancer effect, the British study is the first to demonstrate such an impact on sufferers of prostate cancer, compared with those who were not given the capsules.

Prof Robert Thomas, a consultant oncologist at Bedford Hospital and Addenbrooke’s Hospital in Cambridge will present the results of the “Pomi-T” study at the American Society of Clinical Ontology in Chicago today.

Professor Thomas said: “Our experience in offering high-quality clinical care, collaboration with cancer charities and world-class research with the University of Cambridge has resulted in findings which will have an world-wide impact.

"We hope this will help millions of men to help combat the onset of prostate cancer.

The study found virtually no adverse affects among the group who were given the supplement.

Because of the lowered PSA levels among those given the capsule significantly fewer men proceeded to potentially toxic therapies at the end of the study, the study said.

“Healthy eating and lifestyle is the main way of helping to combat the development of cancer but men can now also turn to a whole food supplement which has been shown to work,” said Prof Thomas.

SOURCE






Statins could lead to muscular injuries, scientists warn

At long last

Millions of people taking statins to lower their cholesterol could be putting themselves at risk of muscular injuries, researchers have warned.

The drugs have been associated with musculoskeletal conditions and joint diseases, with users more likely to suffer such conditions.

The findings were described as “concerning” in light of the fact that taking statins from a young age to prevent cardiovascular diseases has been widely advised.

Dr Ishak Mansi of the North Texas Health Care System in Dallas studied data from a military health care system to determine whether the drugs were associated with musculoskeletal conditions.

A total of 46,249 patients were divided into those who used statins and those who did not.

Dr Mansi said: "Musculoskeletal conditions, arthropathies, injuries and pain are more common among statin users than among similar non-users.

"The full spectrum of statins' musculoskeletal adverse events may not be fully explored, and further studies are warranted, especially in physically active individuals."

The study, which was published in the journal JAMA Internal Medicine, found that statin users had a higher odds ratio (OR) for musculoskeletal diseases, strains and sprains and dislocation.

Dr Mansi said: "To our knowledge, this is the first study, using propensity score matching, to show that statin use is associated with an increased likelihood of diagnoses of musculoskeletal conditions, arthropathies (joint injuries) and injuries.

"In our primary analysis, we did not find a statistically significant association between statin use and arthropathy; however, this association was statistically significant in all other analyses.

"These findings are concerning because starting statin therapy at a young age for primary prevention of cardiovascular diseases has been widely advocated.”

Statins can reduce the level of bad cholesterol in the blood and thus lower the risk of a heart attack in people at high risk.

They have been hailed as a wonder drug that everyone over 50 should be taking, but concerns have already been raised about side effects and possible health problems.

In March, researchers warned that taking high-dose statins put people at an increased risk of potentially fatal kidney problems.

Medics have also warned that statins can cause tiredness in many users.

SOURCE

Tuesday, June 04, 2013




Gruesome, medieval and utterly bizarre... but leeches freed me from awful migraines

The result below could be due to a placebo effect.  She arrived ready to believe and admits that her migraines were intermittent

Migraines are miserable with bells on – actually, the idea of listening to the sound of a bell with a migraine brings me out in a sweat. When I am suffering with one, I can’t even stand the sound of my sheets rustling.

Apart from the intense throbbing, all-encompassing pain in my head, I also feel extremely nauseous and sensitive to light. I feel as if I am a vampire – a small sliver of daylight and POOF: I will spontaneously combust.

Some find there are triggers: hormonal cycles, stress, red wine. But mine hit me without rhyme or reason.

Which is why I decided to give leech therapy, or hirudotherapy – to give the treatment its correct medical term – a go.

As a believer in alternative medicine, I wanted to try something natural and holistic that didn’t involve days spent downing industrial-strength analgesics.

And before you put me and Demi in a box marked ‘Complete loons’, it seems modern medicine is also looking to this rather medieval practice as a solution for a host of ailments.

In the 1980s, leeches began to be used by reconstructive plastic surgeons needing to remove stagnant blood from reattached limbs, to stave off gangrene.

But now there are numerous studies into medical uses for leeches. One found that a single session of leeching – the medical application of bloodsucking leeches – can significantly reduce knee pain caused by arthritis for at least two months.

Researchers from the University of Duisburg-Essen in Germany claimed improvement levels were comparable to those achieved with daily moderate doses of painkillers such as ibuprofen. And before you say you’d probably rather pop a pill, consider the damage regularly taking painkillers can do to the stomach.

Bloodletting was discredited at the end of the 19th Century as doctors felt it left patients weak and prone to infection, but it has had a recent resurgence, with a wave of celebrities trying it.

Another clinical trial at the university is investigating whether nerve pain caused by shingles could also be remedied by leeching.

The secret is in the leeches’ saliva: it apparently contains a large number of analgesic, anaesthetic, and blood-thinning compounds that tackle pain and inflammation, say the researchers.

Google led me to Alicja, a Russian/Polish hirudotherapist with ten years’ experience. She is based in Las Vegas and New York but she has clients from all around the world.

Her passion for natural medicine goes back to her childhood in 1960s Poland, where leeches were used as a popular ‘country healing method’ to cure various health problems.

Back then, Kolyszko reminisces, leeches were sold at many pharmacies. Her grandmother would bring one home whenever any family member got sick, pop it on for an hour, and everything would be better.

These aren’t your common-or- garden leeches (there are more than 700 species that live wild in freshwater and marine environments – one once attached itself to my buttock while I was bathing in the Mekong river in Cambodia).

Medicinal leeches are specially cultivated in a sterile environment. The largest leech farm in the world – Biopharm in Hendy, South Wales – was established in 1812, moving to its current base in 1984.

Just before it bit into me, I could feel its cold and slimy body against my temple. But once it actually did, I was relieved that it felt like no more than a mild sting – the leech secretes an anaesthetic that numbs the skin, otherwise the pain would be unbearable. Botox is a million times worse.

Once Alicja is sure the leech has got to work, then it’s time for the next one, and the one after that, until you have four attached to you. You can definitely feel them working – it is a mild tugging sensation.

I know this sounds extraordinary, but I felt incredibly relaxed. The treatment takes about 40 minutes, until the leech is full and falls off, leaving a mark in the shape of a peace sign. They swell to about four times their normal size, as they become gorged with blood.

To get the most out of hirudotherapy, you need about three sessions within weeks of each other. I have not had a migraine since that first session. More than that, I feel rejuvenated.

Leeches really are miracle workers. I am a total convert.

SOURCE







People whose parents live a long life are 25% less likely to get cancer

This is consistent with there being a general syndrome of biological fitness

People whose parents who live to a ripe old age are more likely to live longer themselves, and are less prone to cancer and other common diseases associated with ageing.

Those whose mothers live beyond the age of 91 or fathers live past 97 are 24 per cent less likely to get cancer, say researchers from the University of Exeter Medical School.

They discovered that overall mortality rates dropped by up to 19 per cent for each decade that at least one of the parents lived past the age of 65.

For those whose mothers lived beyond 85, mortality rates were 40 per cent lower, reports The Journals of Gerontology: Series A.

The figure was a little lower (14 per cent) for fathers, possibly because of adverse lifestyle factors such as smoking, which may have been more common in the fathers.

The research saw nearly 10,000 people questioned. The participants were based in America, and were followed up over 18 years, from 1992 to 2010.

They were interviewed every two years, with questions including the ages of their parents and when they died. In 2010, the participants were in their seventies.

Professor William Henley, from the University of Exeter Medical School, said: 'Previous studies have shown that the children of centenarians tend to live longer with less heart disease, but this is the first robust evidence that the children of longer-lived parents are also less likely to get cancer.

'We also found that they are less prone to diabetes or suffering a stroke.

'These protective effects are passed on from parents who live beyond 65 - far younger than shown in previous studies, which have looked at those over the age of 80.

'Obviously children of older parents are not immune to contracting cancer or any other diseases of ageing, but our evidence shows that rates are lower.

'We also found that this inherited resistance to age-related diseases gets stronger the older their parents lived.'

Ambarish Dutta, from the Asian Institute of Public Health at the Ravenshaw University in India, said: 'Interestingly from a nature versus nurture perspective, we found no evidence that these health advantages are passed on from parents-in-law.

'Despite being likely to share the same environment and lifestyle in their married lives, spouses had no health benefit from their parents-in-law reaching a ripe old age.

'If the findings resulted from cultural or lifestyle factors, you might expect these effects to extend to husbands and wives in at least some cases, but there was no impact whatsoever.'

SOURCE




Monday, June 03, 2013



Study: Regular coffee intake associated with lower risk of liver disease

This appears to be data dredging through a self report questionnaire.  VERY dubious findings

In recent years, several studies have been conducted to analyze the effects of coffee on several aspects of health, and most often the results have been interesting. A new study has discovered one such health benefit offered by regular intake of coffee: it reduces the risk of primary sclerosing cholangitis (PSC), a detrimental liver disease.

According to new research by Mayo Clinic, regular intake of coffee lowers the risk of PSC, an autoimmune liver disease. The study findings have been presented at the Digestive Disease Week 2013 conference that was held at Orlando, Fla.

"While rare, PSC has extremely detrimental effects," study author Craig Lammert, M.D., a Mayo Clinic gastroenterologist, said in a press statement. "We're always looking for ways to mitigate risk, and our first-time finding points to a novel environmental factor that also might help us to determine the cause of this and other devastating autoimmune diseases."

PCS is a disease of the bile duct that triggers inflammation and subsequent obstruction of the ducts, and this finally leads to cirrhosis of the liver, liver failure and biliary cancer.

To prove their finding, the study researchers examined a large group of patients who had PSC and primary biliary cirrhosis (PBC) along with a group of healthy patients. On analyzing the data, they learnt that intake of coffee was linked to a reduced risk of PSC. When compared to healthy people, patients suffering from PSC were not likely to consume coffee. The PSC patients spent 20 percent less time regularly drinking coffee than the healthy group.

From the study, researchers deduce that both PSC and PBS differ from each more than originally thought.

"Moving forward, we can look at what this finding might tell us about the causes of these diseases and how to better treat them," Konstantinos Lazaridis, M.D., a Mayo Clinic hepatologist and senior study author, says. 

SOURCE





Report: Sunshine vitamin "may treat asthma"

This is a study in laboratory glassware only

The amount of time asthma patients spend soaking up the sun may have an impact on the illness, researchers have suggested.  A team at King's College London said low levels of vitamin D, which is made by the body in sunlight, was linked to a worsening of symptoms.

Its latest research shows the vitamin calms an over-active part of the immune system in asthma.  However, treating patients with vitamin D has not yet been tested.

People with asthma can find it hard to breathe when their airways become inflamed, swollen and narrowed.

Most people are treated with steroids, but the drugs do not work for all.

"We know people with high levels of vitamin D are better able to control their asthma - that connection is quite striking," said researcher Prof Catherine Hawrylowicz.

Her group investigated the impact of the vitamin on a chemical in the body, interleukin-17. It is a vital part of the immune system and helps to fight off infections.

However, it can cause problems when levels get too high and has been strongly implicated in asthma.

In this study, published in the Journal of Allergy and Clinical Immunology, vitamin D was able to lower levels of interleukin-17 when it was added to blood samples taken from 28 patients.

The team is now conducting clinical trials to see if giving the sunshine vitamin to patients could ease their symptoms. They are looking at patients who do not respond to steroids as they produce seven times more interleukin-17 than other patients.

Prof Catherine Hawrylowicz told the BBC: "We think that treating people with vitamin D could make steroid-resistant patients respond to steroids or let those who can control their asthma take less steroids."

She said a culture of covering up in the sun and using sun cream may have increased asthma rates, but "it is a careful message because too much sun is bad for you".

Malayka Rahman, from the charity Asthma UK, said: "For the majority of people with asthma, current available medicines are an effective way of managing the condition but we know that they don't work for everyone, which is why research into new treatments is vital.

"We also know that many people with asthma have concerns about the side effects of their medicines so if vitamin D is shown to reduce the amount of medicines required, this would have an enormous impact on people's quality of life.

"We look forward to the results of the clinical trial."

SOURCE


Sunday, June 02, 2013



Forget the Mediterranean diet, NORDIC foods could be the key to avoiding heart disease, say scientists

Nordics live longer, for starters  -- JR

For years, the Mediterranean diet with plenty of olive oil and vegetables has been lauded as the key to health and longevity.

But it seems that a Scandinavian nation's cuisine could actually be better for you.

Scientists have found that eating a diet based on that served up traditionally in Denmark could significantly reduce your risk of heart disease.

Nordic cuisine is usually made up of fresh berries, fish and game - foods that thrive in colder northern climates.

Professor Matti Uusitupa, from the University of Eastern Finland,told The Daily Telegraph: 'The Mediterranean diet, representing the diet traditionally eaten in southern Europe, has long been related to improved health and prevention of cardiovascular disease, certain cancers and type two diabetes.

'Acceptance of the Mediterranean diet has not been easy in other parts of the western world, probably due to difficulties in changing dietary patterns, cultural differences in taste and limited accessibility to various foods.

'A health-enhancing regional Nordic diet has therefore been proposed as an alternative to the Mediterranean diet.'

The diet has already been nicknamed the Noma diet - after the Noma restaurant in Copenhagen, ranked as the world's best three years in a row.

The study featured 166 obese people from Finland, Denmark, Sweden and Iceland, some of whom ate their regular diet and some who adopted the Nordic diet.

Both sample groups ate the same number of calories but those on the Nordic diet ate meals packed with fish, locally sourced vegetables and whole grain products.  Poultry or game was consumed rather than red meat.

While those who stuck to their regular diet showed little difference in their levels of 'bad' cholesterol after 24 weeks, those on the Mediterranean diet had seen LDL-C levels drop four per cent with an increase in 'good' cholesterol.

Unlike the Mediterranean diet, the Nordic version also reduced chemicals that cause inflammation in the blood that are linked to heart disease.

SOURCE






Retailers should keep consumers — not Greens — in mind

As part of its Culture of Alarmism project, the Independent Women’s Forum (IWF) has recently launched a coalition letter – which includes CEI — to retailers to combat the greens so-called “Mind the Store“ campaign. We (IWF, CEI, and 21 other groups) advise retailers to ignore radical greens’ advice to remove certain products from store shelves, and instead honor consumer freedom.

The Greens’ effort, led by Safer Chemicals, Healthy Families, calls on the nation’s top 10 retailers — Walmart, Kroger, Target, Walgreens, Costco, Home Depot, CVS Caremark, Lowe’s, Best Buy, and Safeway –to remove a wide range of useful products from store shelves because they contain one of 101 so-called hazardous chemicals.

According to this group:  "Since we began in 2009 the evidence that unregulated chemicals are having profound health impacts has only grown. The Presidents Cancer Panel report and the recent United Nations report are just two examples. (Our own report summarizes the state of the science linking chemicals and various health impacts here.) And yet the government is too slow to respond in the face of chemical industry opposition."

In reality, there is no compelling evidence that trace chemicals in consumer products pose significant risks, particularly when used as directed. As I noted in a recent IWF paper on cancer, the President’s Cancer Panel report is a political document, not a scientific study and its claims have been rebuked by reputable cancer researchers. The IWF paper and material found on CEI’s SafeChemicalPolicy.org offer lots of other reasons why consumers should not be alarmed by these products.

But that doesn’t seem to matter to the greens, who developed a rather arbitrary and scientifically meaningless list of chemical targets. They placed substances on their 101 hazardous chemicals list if the group found them on two of six government “chemicals of high concern lists” (see the greens’ “methodology” here). Yet these lists tell us nothing about actual risks. Rather, these politically derived government listings merely demonize chemicals because they are theoretically dangerous at some unspecified level. That makes them “hazardous” but not necessarily risky.

For example, cyanide is a hazardous product because at a high level, it can kill you. But if you experience no — or trace level — exposure, it has no effect. For example, the trace level of cyanide found in Brussels sprouts poses no real risk to consumers who eat them even pretty regularly. Ditto for water. Water is essential, but if you drink too much it can kill you. Trace exposure to chemicals in consumer products poses even lower risks than chemicals found in food since its more difficult for them to enter the human body.

Such realities make the Mind-the-Store campaign completely nonsensical. It suggests that retailers remove all products made with their 101 hazardous chemicals, which apparently includes food products. Given that humans eat food products — increasing our exposure, one might place these on the chopping block first. Accordingly, if retailers did apply the Mind-the-Store Campaign advice, they have to consider removing the following products from their store shelves:

*    Any frozen food, soup, rice, pasta, or other food made with mushrooms, particularly Shiitake mushrooms. Mushrooms naturally contain the allegedly dangerous formaldehyde.

*   Any food containing carrots, which naturally contain trace levels of arsenic.

*    Coffee, any frozen or food with grilled asparagus, dried fruit, or any product that contains baked or fried potatoes or other carbohydrate rich foods. These contain acrylamide, which is naturally created in many foods when cooked. Kiss those french fries goodbye.

*    Wine, beer, and spirits. Are you crying yet? Fermentation and distillation produces a wide range of trace chemicals in alcohol products, including acetaldehyde.

However, a real danger exists if retailers cave to the green hype as consumers will lose access to safe and effective products that both enrich our lives and make them safer. Second-best substitutes might not only fail to meet our needs, they could prove more dangerous. For example, if activists succeed in removing many flame retardant products from the market, more people might die in fires. If we eliminate disinfectants such as triclosan, more people may get sick. If we take formaldehyde out of cosmetics, more consumers might suffer health effects from applying rancid products on their skin. And if retailers refuse to sell containers lined with bisphenol A-based resins, inferior replacement products may lead to increased food-borne illnesses.

This is why IWF, CEI, and other coalition partners are calling on retailers to ignore the “Mind-the-Store” campaign advice. After all — despite the greens nanny statist comments that it’s “not feasible” for consumers to make wise choices — consumers are better situated to decide what products they want to buy and which they don’t.

SOURCE



Friday, May 31, 2013



Living in the countryside 'may increase the risk of Parkinson's disease' by up to 80%

This is just correlational rubbish.  Country people tend to have lower IQs and low IQ is associated with worse health.  Pesticides need have nothing to do with it

A country life may sound idyllic, but experts have found a possible link between rural living and Parkinson's disease.

Analysis of more than 100 studies from around the world shows that exposure to pesticides, bug and weed killers and solvents is associated with a higher risk of developing Parkinson's disease.

Study author, Dr Emanuele Cereda, said: 'Due to this association, there was also a link between farming or country living and developing Parkinson's in some of the studies.'

Researchers from the IRCCS University Hospital San Matteo Foundation in Pavia, Italy, reviewed studies that looked at weed, fungus, rodent or bug killers, and solvents in relation to the risk of developing Parkinson's disease.

Proximity to these chemicals, due to country living, occupation and drinking water were also evaluated.

The research found that being exposed to bug or weed killers and solvents increased the risk of developing Parkinson's disease by 33 to 80 per cent.

In controlled studies, exposure to the weed killer paraquat or the fungicides maneb and mancozeb was associated with twice the risk of developing the disease.

Dr Cereda added: 'We didn't study whether the type of exposure, such as whether the compound was inhaled or absorbed through the skin and the method of application, such as spraying or mixing, affected Parkinson's risk.

'However, our study suggests that the risk increases in a dose response manner as the length of exposure to these chemicals increases.'

The research appears in the journal Neurology.

SOURCE






Toddlers should drink two cups of cow's milk a day - no more, no less, say experts

Cow's milk is both good and bad for you?  Sounds unlikely.  Much in need of replication before it is taken seriously.  Journal article here

Two cups of cow’s milk a day is the ideal amount for toddlers, researchers say.  Too little can lead to deficiency in vitamin D - but too much can deplete levels of iron, a study found.

The authors looked at the levels of vitamin D and iron, two of the most important nutrients in milk, in more than 1,300 children aged between one and five from 2008 to 2010.

Lead author of the study, Dr Jonathon Maguire, a paediatrician at St. Michael’s Hospital in Toronto, Canada, said: 'Vitamin D deficiency in children has been linked to bone health issues and iron deficiency has been linked to anaemia and delays in cognitive development.

'We started to research the question because professional recommendations around milk intake were unclear and doctors and parents were seeking answers.

'Being able to answer parents’ questions about healthy cow’s milk intake is important to avoiding these potentially serious complications of low vitamin D and iron stores.'

They found that children who drank the most cow’s milk had higher Vitamin D stores, but lower iron stores.

He added: 'We saw that two cups of cow’s milk per day was enough to maintain adequate vitamin D levels for most children, while also maintaining iron stores.

'With additional cow’s milk, there was a further reduction in iron stores without greater benefit from vitamin D.'

The researchers recruited healthy children during routine doctor’s appointments.  Parents were asked to fill out an extensive questionnaire about their children’s milk drinking habits and other factors that could affect iron and Vitamin D stores.

A blood sample was obtained from each child to determine body stores of iron and Vitamin D.

The study also suggested that children with darker skin pigmentation may not have enough vitamin D stores during the winter months.

However, Dr Maguire suggested that instead of consuming more milk to increase these levels, wintertime vitamin D supplementation may be a more appropriate way of increasing vitamin D stores while preserving iron stores.

The results of the study were published online by the journal Paediatrics.

SOURCE

Thursday, May 30, 2013



Obesity risk for C-section babies: 84% more likely to be overweight than children born naturally

Less healthy women probably have more C-sections and it is the prior health of the mother that influences obesity, not the C-section

Babies born by caesarean section are almost twice as likely to be overweight as children and teens, according to a new study.

After examining the health records of more than 10,000 British children, researchers found that surgically delivered 11-year-olds were 83 per cent more likely to be overweight compared to those born naturally.

The results of the study confirm previous research that also found a link between caesareans and childhood obesity.

Researchers believe that babies by natural childbirth are exposed to bacteria in the birth canal which helps regulate metabolism in later life.

The findings suggests the obesity epidemic could in part be driven by increasing rates of caesareans. The rate in England stands at one in four births, which totals more than 160,000 a year.

Health concerns often dictate whether a women undergoes surgical delivery, which can be life-saving for both mother and child, but in many cases there is no medical reason for the operation.

‘There may be long-term consequences [of caesareans] to children that we don’t know about,’ said lead researcher Dr Jan Blustein, from the New York University School of Medicine.

She said the extent of the obesity risk for children is ‘not great’ and should not be a factor when considering whether a women should have the operation for medical reasons.

The team looked at data from a major investigation of childhood development called the Avon Longitudinal Study of Parents and Children. This tracks the long-term health and well-being of around 14,000 children born in the early 1990s.

Just over nine per cent of the children in the study were born by caesarean, and on average were two ounces lighter than those delivered naturally.

But by the age of six weeks, those surgically delivered were consistently heavier than their naturally-born counterparts at almost all points - even when other factors such as their mother’s weight and whether they were breastfed were taken into account.

The risk of obesity was particularly marked among children born to overweight mothers, the researchers said.

In total, a third of all the three-year-olds in the study were overweight, while at the age of seven and 15 there was a 17 per cent chance of a child being obese.

The research, published in the International Journal of Obesity, also highlighted the risks to women of undertaking a caesarean including increased chance of bowel or bladder injuries as well as future pregnancy complications.

Dr Blustein said one reason for the link between caesarean’s and obesity could that these infants are not exposed to beneficial bacteria in the birth canal, and therefore their bodies take longer to accumulate good bugs that boost the body’s metabolism.

Obese adults tend to have fewer ‘friendly’ bacteria in their digestive tract and higher levels of ‘bad’ bacteria, which mean they burn fewer calories and store more of them as fat.

However, other studies show that obese women are more likely to need a caesarean, and are more likely to have children who grow up to be overweight or obese.

‘The other possibilities are (that) these are children that would have been heavier anyway,’ Dr Blustein said. ‘Being heavy as a woman is a risk factor for C-section, so that’s the problem with trying to figure out whether this is real or if it’s simply a matter of selection.’

SOURCE





An end to annual flu injections? Scientists develop new 'universal' jab against all strains of influenza which could last a lifetime

Let's hope it works

A new type of vaccine has been developed which could provide long-term protection and last a lifetime against all types of influenza.

The 'universal' vaccine targets part of the virus common to all strains, meaning it could provide a way around the problem of the bug frequently mutating and making preventative treatment ineffective.

It was created by a team working for U.S. healthcare company Sanofi using techniques that have also raised hopes of a new generation of vaccines against other diseases.

The study has been published in the journal Nature.

Team leader Gary Nabel said: 'This structure-based vaccine improves the potency and breadth of influenza virus immunity, and it provides a foundation for building broader vaccine protection against emerging influenza viruses and other pathogens.'

Influenza kills between 250,000 and 500,000 globally per year, according to the World Health Organisation.

Earlier this month experts warned a deadly bird flu virus sweeping through China had taken the first steps towards becoming a global threat to human populations.

In the space of one month, the avian strain known as H7N9 spread through all 31 Chinese provinces and claimed 125 victims, killing a fifth of those infected.

Scientists say it is mutating rapidly and already has two of five genetic changes believed to be necessary for human-to-human transmission.

Currently the virus has made its home in chickens, and only affected people who have had close contact with the birds, often at live markets.

The Sanofi team's vaccine is built using protein 'self-assembling nanoparticles', which when injected create antibodies that attach themselves to parts of the virus that are common to different strains.

In lab tests on ferrets, which can suffer the same strains of flu as humans, it was more potent and affected more strains than the current licensed vaccine, the team said.

It is also safer to make than standard vaccines, which are produced by growing the virus in a lab.

The DIY way it is made means similar methods could be used to create vaccines against other diseases.

Scientists gave a cautious welcome to the research, but said trials on humans were needed to see if it worked as well as hoped.

Professor Wendy Barclay, chair in influenza virology at Imperial College London, said the research targeted a 'soft underbelly of the virus'.

'In short this paper takes us a step closer to believing that a universal flu vaccine is possible, by thinking outside of the box in terms of how to synthesise and manufacture flu vaccines,' she said.

'What's more this route could be faster, cheaper and safer than the one we usually use.'

Professor Sarah Gilbert, professor of vaccinology at the University of Oxford, added:

'There's no indication as to whether any clinical trials are planned, and since this is a new type of vaccine it might be some time before they could start.

'So at the moment it's an interesting development in the lab, with some novel aspects, but definitely not a universal influenza vaccine and it needs to be tested in clinical trials before we get too excited.'

SOURCE




Wednesday, May 29, 2013



Boy, 2, who was fighting for his life with meningitis is cured using daily doses of ASPIRIN


A gorgeous boy.  How wonderful that he was saved

A baby boy who developed a deadly infection that made his brain swell has made a miraculous recovery - after doctors used aspirin to save his life.

Robert Airey was nine months old when he was diagnosed with pneumococcal meningitis and respiratory failure.

He was rushed to Southampton Children's Hospital as the infection caused a series of minor strokes and affected the nerves to his vocal cords.

And as doctors fought to save Robert's life, his brain continued to swell. It was then consultant paediatric neurologists Professor Colin Kennedy and Dr Neil Thomas took the unusual step of giving Robert daily doses of aspirin.

The decision proved a defining moment as the drug treated the blood clots in Robert's brain and the brave boy made a miraculous recovery.

The infection, which causes inflammation in the brain and spinal cord, affects around 200 people, mainly babies, every year.  More than 20 per cent of those die from the illness and half experience long-term health complications such as deafness or brain damage.

But Robert, who turned two in March, has incredibly survived the infection - and escaped any of the life-changing repercussions.

His mother Sarah, 34, who is a GP, said: 'Miracle can be an overused term, but I think it's relevant here.

'From what we expected, to him making it and then recovering so well - it was an against the odds job.

'And to see him playing in the mud, rolling around and playing with the other children is an amazing sight.'

Robert first fell ill at his family home in Goring-on-Thames, Oxfordshire, in the days leading up to Christmas in 2011.  He'd had cough and cold symptoms for a few days, but by Boxing Day his temperature had become very high and he was suffering with sickness.

That evening worried parents Sarah and Paul noticed their baby suddenly felt limp and his breathing had become very fast. His skin was pale and his hands and feet were also very cold.

They rushed him to Royal Berkshire Hospital in Reading, Berks, where he was diagnosed with pneumococcal meningitis and respiratory failure.

Sarah said: 'From one minute being at home enjoying our first Christmas with Robert, we found ourselves in hospital being told he had severe meningitis and was suffering from respiratory failure. It was terrifying.'

Robert was in need of an urgent transfer to a specialist children's intensive care unit to receive the care his life depended on.  But with nearby hospitals at full capacity, doctors called on the paediatric intensive care unit (PICU) at Southampton Children's Hospital in Hampshire.

Sarah said: 'We struggled to take it all in, but the gravity of the situation was clear. At one stage, we were discussing transfer to a children's hospice.'

After initially responding to antibiotic treatment, Robert's immune system went into overdrive and set off a second round of inflammation in his brain.

Consultant paediatric neurologists Professor Colin Kennedy and Dr Neil Thomas then decided to administer him with a daily dose of aspirin.

Professor Kennedy said: 'This is a rare, but particularly aggressive illness and, despite seemingly beginning to do well, there was a marked deterioration in Robert's condition in his second day in PICU.

'Aspirin is not a conventional treatment for children with meningitis, particularly babies, but the severity of this situation and the need for fast action changed the likely balance of risk and benefit.'

The decision proved life-saving and Robert was moved out of the unit four days later - his dad Paul's birthday.

IT project manager Paul, 35, said: 'After such a rollercoaster of emotion in such a short space of time, it was almost unbelievable that Robert was well enough to leave intensive care - it was the ultimate birthday gift.'

Robert, who has made an almost full recovery since being discharged from hospital in October, now spends two days a week at nursery.

Sarah added: 'We were told Robert had even escaped some of the life-changing consequences, such as hearing impairment and severe brain damage, and I put that down to the exceptional medical team and the outstanding nursing care he received.'

SOURCE







Alzheimer's 'wonder drug' could be completely ineffective, warn scientists

A 'wonder' drug hailed as a new treatment for Alzheimer's may be ineffective, experts have warned. The cancer drug bexarotene, marketed as Targretin, was said to reverse the build-up of the brain plaques which have been linked Alzheimer's.

A high profile 2012 report, published in journal Science, reported that the drug quickly removed most of the plaques in the brains of mice and rapidly reversed the pathological, cognitive and memory deficits related to the onset of Alzheimer's.

The results were 'stunning' to the scientific community but seemed 'too good to be true', it was claimed at the time.

Now, another team of experts writing in the same journal say they have been unable to replicate the results of the original study and have called the findings into doubt.

Researchers at the University of Chicago, Northwestern University, Massachusetts General Hospital, Washington University in St Louis and University of Tubingen in Germany, jointly stated: `The drug has no impact on plaque burden.

`We have failed to support earlier findings that Targretin is efficacious in reducing plaque burden in transgenic mouse models of cerebral plaque deposition.'

Professor Sangram Sisodia, of the University of Chicago, said he and his colleagues were curious about the initial report in 2012.

He said: `We were surprised and excited, even stunned, when we first saw these results presented at a small conference.  `The mechanism of action made some sense, but the assertion that they could reduce the areas of plaque by 50 per cent within three days, and by 75 per cent in two weeks, seemed too good to be true.

`We all went back to our labs and tried to confirm these promising findings.  `We repeated the initial experiments - a standard process in science. Combined results are really important in this field. None of us found anything like what they described in the 2012 paper.'  The researchers found no effects on plaque burden of mice that were treated with bexarotene.

They say that the discrepancy is not only disappointing but also raises concerns for patient safety.

The drug was approved for treating a type of skin cancer, meaning it is also available by prescription for 'off label' uses as well.

But it has never been tested as a treatment for Alzheimer's in humans and has side effects including headaches, vomiting and liver problems.

Despite the lack of testing on Alzheimer's patients, it is believed that many requested that their doctors prescribed them the medication and, in some cases, were given it.

Professor Robert Vassar, of Northwestern University, said: `Anecdotally, we have all heard that physicians are treating their Alzheimer's patients with bexarotene, a cancer drug with severe side effects.

`This practice should be ended immediately, given the failure of three independent research groups to replicate the plaque-lowering effects of bexarotene.'

But other experts, also writing in Science, said that the cognitive effects on the mice had been replicated, even if the effects on plaque had not.

University of Pittsburgh professor, Rada Koldamova said that the drug did improve cognitive effects on mice, although tests could not confirm the actual effects on the plaques.

Professor Koldamova said: `We believe these findings make a solid case for continued exploration of bexarotene as a therapeutic treatment for Alzheimer's disease.'

Co-author Iliya Lefterov said: `We were already set up to repeat the Case Western Reserve University study to see if we could independently arrive at the same findings.

`While we were able to verify that the mice quickly regained their lost cognitive skills and confirmed the decrease in amyloid beta peptides in the interstitial fluid that surrounds brain cells, we did not find any evidence that the drug cleared the plaques from their brains.'

SOURCE



Tuesday, May 28, 2013



CDC: 1 In 5 US Children May Have Mental Disorder

This is just definitional extravagance.  One in three adults were once said to be neurotic as well.  You can define your way to any conclusion you want

 Nearly 1 in 5 children in the U.S. suffers from a mental disorder, and this number has been rising for more than a decade.

According to a study conducted by the Centers for Disease Control and Prevention, up to 20 percent of American children are suffering from mental disorders such as attention-deficit hyperactivity disorder (ADHD), anxiety, depression and autism.

The CDC's first study of mental disorders among children aged 3 to 17 also found that the cost of medical bills for treatment of such disorders is up to $247 billion each year.

"This is a deliberate effort by CDC to show mental health is a health issue. As with any health concern, the more attention we give to it, the better. It's parents becoming aware of the facts and talking to a health-care provider about how their child is learning, behaving and playing with other kids," said Dr. Ruth Perou, the study's lead author.

The CDC data was collected between 1994 and 2011, and it shows that the number of children being diagnosed with mental disorders has been steadily growing. The study did not conclude exactly why the numbers are increasing.

More research is needed to determine the specific causes of mental disorders, said Dr. Perou, and that greater awareness could lead to an uptick in diagnoses. A host of environmental factors, including chemical exposure and poverty, also can affect a child's mental health, she said.

The study also found that girls were more prone to depression and alcohol abuse than boys, and that 6.8 percent of U.S. children are affected by attention-deficit hyperactivity disorder.

SOURCE




Live longer with a daily dose of calcium: Women who take a supplement have a 22% lower risk of death

All this probably shows is that people who take supplements are more careful with their health generally

Taking a calcium supplement of up to 1,000 mg per day can help women live longer, say researchers.

A new study shows a 22 per cent lower risk of dying over a 10-year period compared with women who are not taking supplements regularly.

The study is likely to reassure many who take supplements either prescribed by their doctor for osteoporosis - thinning bones - or bought over the counter as 'bone insurance'.

Previously there have been fears that high-dose supplements could raise the risk of dying from heart disease.

But Canadian researchers behind the latest study are unequivocal in recommending extra calcium for women with low intakes.

Lead author David Goltzman, of McGill University in Montreal, said 'Our study found daily use of calcium supplements was associated with a lower risk of death among women.

'The benefit was seen for women who took doses of up to 1,000 mg per day, regardless of whether the supplement contained vitamin D.' according to a recent study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM).

The researchers analysed data from the large-scale Canadian Multicentre Osteoporosis Study which monitored the health of 9,033 Canadians between 1995 and 2007. During that period, 1,160 participants died.

The findings show a 22 per cent cut in risk of death for women using calcium supplements compared with non-users, but no statistical benefit for men.

The study found no conclusive evidence that taking vitamin D had an impact on death rates.

There appeared to be no benefit from taking calcium at doses bigger than 1,000mg a day.

Dr Golzman said 'Higher amounts of calcium were potentially linked to longer lifespans in women, regardless of the source of the calcium.  'That is, the same benefits were seen when the calcium came from dairy foods, non-dairy foods or supplements.

'Our recommendation would be to assess dietary intake to meet calcium and vitamin D requirements for bone health and to consider supplementation as necessary to meet the requirements.'

The study, which is to be published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism, suggests several possible mechanisms for promoting longer life.

Calcium supplements are linked to a better balance of blood fats, lower risk of high blood pressure, better bone metabolism and bowel health.

Health benefits may also be driven by eating more calcium from food within a healthy diet, including dairy products and fish.

There have been conflicting results from studies in recent years about the benefits and possible harms of taking calcium supplements, especially more than 1,000mg a day.

Scientists believe mega doses of calcium circulating in the blood have a 'flooding effect' which may lead to hardening of the arteries and heart attacks.

In contrast, dietary calcium is taken in small amounts spread throughout the day, so is absorbed slowly.

The Food Standards Agency recommends adults have 700mg of calcium a day, which should come from dietary sources including all types of milk, cheese, yoghurts and green, leafy vegetables.

Official figures suggest women consume only 740mg of calcium per day from food sources on average - 43mg lower than in 2000-1.

Carrie Ruxton, spokesperson for the Health Supplements Information Service, said it was likely that women taking extra calcium were reaping the benefits of having an optimal supply of the mineral.

She said: 'Men tend to get a bigger intake from their diet but many women don't consume as much, especially those cutting back on dairy products.

'The benefits found in this study could be from women having extra supplies, bringing them up to normal and optimal levels.'

She said there were subtle effects on metabolism apart from calcium's bone-building qualities, including regulation of appetite and weight.

But the direct effects of helping to prevent the consequences of osteoporosis such as falls and hip fractures should not be under-estimated.

SOURCE