Friday, August 16, 2013
Eating salmon once a week 'reduces risk of rheumatoid arthritis by half'
The esteemed Karolinska is putting out a lot of rubbish these days. This was a self-report study, open to social desirability bias. Middle class people probably said the "right" thing more often and they are healthier anyway
Eating salmon at least once a week could halve the risk of developing rheumatoid arthritis. Oily fish such as salmon or mackerel had the most marked effect, reducing the risk by 52 per cent, a study found. The same benefit comes from eating four portions a week of lean fish such as cod or plaice.
The difference is in the consumption of omega-3 fatty acids, which are present in much higher level in oily fish.
Even eating just one portion of any type of fish each week for 10 years leads to a 29 per cent cut in risk of arthritis, compared with those eating less fish.
Middle-aged and older women are traditionally more at risk of rheumatoid arthritis. The Swedish study, published in the Annals of the Rheumatic Diseases, involved 32,000 women born between 1914 and 1948.
They completed surveys on what they ate, in 1987 and again in 1997. During this period, 205 of the women developed rheumatoid arthritis.
After adjusting for factors such as smoking habits, alcohol intake and age, researchers at the Institute of Environmental Medicine at the Karolinska Institute in Stockholm found women with consistently high daily intake in both 1987 and 1997 of omega-3 fish oils had a 52 per cent lower risk of developing the condition.
The study attributed the benefit to the long-chain omega-3 polyunsaturated fatty acid (Pufa) content in fish.
Rheumatoid arthritis, which affects around 580,000 men and women across England and Wales, is a chronic inflammatory disease that causes pain and swelling in the joints.
It is thought that omega-3 fatty acids block the body’s response to inflammation.
Oily fish contain the highest levels of omega-3 fatty acids, which are considered essential because the body cannot make them from other sources and must obtain them through diet.
The best source is fish such as mackerel, herring, salmon, sardines or trout.
Children of overweight women die younger
Of course they do. They are more likely to be working class. Some insight shown in the last sentence below
CHILDREN born from obese women are 35 per cent more likely to die prematurely in adulthood, according to a new study that warns of a growing epidemic.
Researchers in Scotland traced 37,709 children of 28,540 women who gave birth between 1950 and 1976.
The children were aged from 34 to 61 at the time of the study published in the online journal bmj.com.
Researchers included the data of 6,551 children that had already died prior to the start of the study.
Of the mothers, 21 per cent were overweight - meaning a body mass index (BMI) or height-to-weight ratio of 25 to 29.9 - and four per cent obese, with a BMI of 30 or more, when they gave birth.
"The offspring of obese mothers were 35 per cent and those of overweight women 11 per cent more likely to die before the age of 55 years than those of normal-weight mothers," said study co-author Rebecca Reynolds, professor of metabolic medicine at the University of Edinburgh.
The team also found that the children of obese mothers were 42 per cent more at risk of being admitted to hospital for heart disease as adults.
"Our results suggest that the intrauterine (womb) environment has a crucial and long-lasting effect on risk of premature mortality in offspring," the study said.
Other research has shown that conditions in the womb can cause lifelong body changes, which may affect such functions as appetite control and metabolism.
But post-birth factors like diet and exercise or a genetic propensity to be obese could not be ruled out as the cause of the children's health problems.
"Strategies to optimise weight before pregnancy are urgently required," wrote the team - given that about one in five pregnant women in the UK are obese.
"We also need to consider giving good lifestyle advice to children of obese mothers and early monitoring of risk factors for heart disease such as high blood pressure, blood sugar, blood fats and smoking," added Reynolds.
According to the World Health Organisation, more than 1.4 billion adults aged 20 and older were overweight in 2008 - a figure that had nearly doubled since 1980.
More than a third of adults were overweight in 2008, and 11 per cent obese. At least 2.8 million adults die every year as a result of weight-related health problems.
Experts commenting on the study stressed the need for further research to confirm a direct, causal link between a woman's obesity and her child's risk of dying young.
Posted by jonjayray at 12:15 AM