Wednesday, July 17, 2013
Sweets, fast food and fizzy drinks linked to bowel cancer for the first time
It was just another correlational study and the authors acknowledge that no causal relationbship was demonstrated. Probably just a social class effect. More details here
Eating sweets, fast food and drinking fizzy drinks may lead to bowel cancer, a study has found. Research show that high-energy snack foods are a risk factor of colorectal cancer – alongside a lack of exercise and smoking. This is the first proof of a connection between the disease and a diet high in sugar and fat.
A research team examined more than 170 types of foods, including ‘healthy options’ such as vegetables and fish, and high sugar snacks such as chocolate and fruit drinks and fatty options like crisps.
As well as established risk factors of colorectal cancer - a family history of cancer, low exercise and tobacco, the team identified new ones. Among them were a high intake of high-energy snacks and sugar-sweetened drinks.
The ‘positive connection’ found between diet and bowel cancer is the first proof of the popular theory.
The study, published in the latest edition of the European Journal of Cancer Prevention, builds on previous research into the link between bowel cancer and diet.
Dr Evropi Theodoratou from Edinburgh University’s School of Molecular, Genetic and Population Health Sciences, who carried out the study said: ‘What we have found is very interesting and it merits further investigation using large population studies.
‘While the positive associations between a diet high in sugar and fat and colorectal cancer do not automatically imply "cause and effect", it is important to take on board what we’ve found - especially as people in industrialised countries are consuming more of these foods.’
Top psychiatrist: 'We are turning childhood into a disease'
FOR any parent, having to accept your child needs psychiatric drugs must be agonising. But when Susan Bevis's 13-year-old daughter Amy suffered a breakdown after a vicious campaign of school bullying, drugs seemed the only option - as instructed by psychiatrists.
Amy's ordeal began when she simply fell out with a clique of girls. The situation steadily worsened and she faced constant online bullying as well as being physically attacked in class. Gangs started to follow her home, and the family house and car were damaged. Neither the police nor school seemed able to do anything.
Under this terrible strain, Amy began to break down. After months of sleeplessness and extreme anxiety, she said she'd begun to hear voices in her head. Her mother sought medical help. Instead of being offered counselling and social support, Amy was diagnosed by a psychiatrist as having 'first-rank schizophrenia', which means she had signs of the condition.
Susan was initially sceptical, but was so anxious to get help she reluctantly agreed to Amy being given medication - this was Risperdal, an antipsychotic that changes the way chemicals in the brain work.
The effects of the medication
"The results were shocking," recalls Susan. "After only a matter of weeks, her slim body ballooned, her legs were like tree trunks, her eyes became dead-looking, her hair was lank and she felt constantly tired."
Although Amy's 'schizophrenic' symptoms were relieved, she was bullied even more. Worried, Susan researched the drug. "The official information said it had never been trialled on children. I was shocked. Amy wanted to come off it, so I agreed" she said.
Worryingly, Amy seemed to relapse, suffering from hallucinations again. "But in fact, she was suffering withdrawal symptoms from the drug," says Susan. After weeks of agony, the symptoms began to subside. The solution to her problems was to move school.
Susan, now a single mother, scrimped and saved to send Amy to a theatre school - "it was the making of her," she says. "My daughter has wanted to be an actress since she was four. It gave her an interest - and an interest is a way of distracting a child from trauma."
Amy is 22 now and is, says her mother, "happy and on top of the world". She's starting her career on the stage, having graduated with a university degree in theatre arts. "The truth is that my daughter never had "first-rank schizophrenia" - she was being bullied and was under terrible stress."
Susan is full of scorn for the psychiatric community's readiness to label children as mentally ill then give them powerful and potentially damaging drugs. She's become a vociferous critic on the subject, appearing at conferences and pressure groups.
She is particularly dismissive of the way psychiatrists often make their diagnosis using the profession's 'bible' - the Diagnostic and Statistical Manual (DSM), just published in its fifth version (DSM-5).
The manual is written by an influential committee of American psychiatrists and lists official diagnoses and symptoms - its clinical definitions are used by professionals the world over as a guide for labelling psychiatric illnesses, and giving drug treatment.
One of the major criticisms is that the number of new psychiatric diagnoses added to it is rising exponentially. In 1952, the manual was 130 pages long. The fifth edition has 992 pages. And this latest edition has controversially added new diagnoses such as 'Disruptive Mood Dysregulation Disorder', which essentially makes children's temper tantrums a mental illness.
Critics believe the manuals are "disease mongering" - inventing labels for conditions that don't really exist, but are normal, albeit difficult, facets of human nature.
"If you look at the DSM-5 there is a diagnosis for everyone. But there is no scientific proof to back many of them," says Susan, adding, only half in jest: "No doubt they would have a diagnosis for me, as I have challenged the psychiatrists about their care."
One might expect such scepticism from a mother with a bad experience of the psychiatric profession. But the fact is that spiralling numbers of children are being diagnosed with "mental health problems" that may often be merely behavioural.
Let's look at ADHD as an example. According to the Royal Australasian College of Physicians, ADHD affects about 6.8 per cent of Australian children. Other estimates suggest the prevalence rate among 6 to 17-year-olds in Australia is around 11 per cent.
Recent British figures show that 650,000 children between the ages of eight and 13 are on the drug Ritalin for ADHD. The New York Times reported that 11 per cent of American children have been diagnosed with ADHD.
The psychiatrist who agrees
Now, one of the world's leading psychiatrists has blown the lid off this burgeoning problem.
Dr Allen Frances chaired the taskforce that wrote the previous version of the DSM, in 1994. At the time, he was described by the New York Times as "the most powerful psychiatrist in America". But now he admits his version of the manual helped open the floodgates for an epidemic of over-diagnosis of children's mental illness and mass over-medication, with potentially devastating side-effects.
"In the past 20 years, diagnosis rates of Attention Deficit Hyperactivity Disorder have tripled, while autistic disorder and childhood bipolar disorder have each increased by a remarkable 40-fold," says Dr Frances, an emeritus professor at Duke University School of Medicine in South Carolina.
"This is not because our kids have suddenly become sicker, it's just that diagnoses are applied to them more loosely."
He fears the latest edition will make the problem even worse. The result has been a bonanza for the pharmaceutical industry. For example over the past 20 years, the worldwide value of the market for ADHD drugs alone has grown from $18 million to $18 billion a year.
And the long-term effects of these drugs on children remains a perilous unknown, because rigorous safety checks were not performed on children before the medicines were launched.
"It is a mass public health experiment that has been done without anyone's informed consent," says Dr Frances. "We have no idea about the long-term effects.
"We do know that in the short term antipsychotic drugs cause tremendous weight gain. A child weighing 50 kilograms will put on 5.5 kilograms in only 12 weeks. This is bound to be a factor for diabetes and heart disease. There is also controversy over whether the long-term use of brain-stimulating drugs causes children to grow up likely to become adult drug abusers."
The fear is that Ritalin-type medications are so similar to amphetamine or cocaine they create addictive yearnings in young brains that may lead to later drug abuse. There are also concerns that ADHD medication damages young brains in similar ways to cocaine which, ironically, may make them into impulsive and antisocial adults.
"Whatever the long-term effect of these stimulant medications, we do know that they are being over-used massively because of over-diagnosis," says Dr Frances. "And being wrongly told you have a mental problem at a young age can have a crippling effect for life."
Temper tantrums on the list
Dr Frances is particularly worried by the new addition to DSM-5 of Disruptive Mood Dysregulation Disorder.
"The idea of turning temper tantrums into a mental disorder is terrible," he says. Futhermore, "the criteria for diagnosing it were pretty much conjured out of thin air".
Tellingly, in France, where they shun the DSM, the proportion of kids diagnosed and medicated for ADHD is less than half a per cent. In Britain it's around 4 per cent. It is estimated one in every 100 Australian children is on medication to treat ADHD symptoms.
The Royal College of Psychiatrists is keen to play down the influence of the manual, claiming that they pair the DSM information with "another set of psychiatric-illness classifications - the International Classification of Disease, which is published by the World Health Organisation," says a spokeswoman.
"The Royal College recognises there are some valid criticisms of the DSM approach. All diagnostic classifications in medicine have been, and always will be, evolving and ready to be improved in response to new scientific evidence."
In the meantime there is more medication on the way. In February drug regulators in the UK granted a licence for a new class of ADHD drug, Elvanse, approved for children six and older who haven't responded to Ritalin-type medication, despite a list of known side-effects, such as anxiety, weight loss, stunted growth and heart problems. The drug is not yet available in Australia but is also licensed in Canada.
As Dr Frances knows only too well, it is very easy to add new diagnoses and drugs for children. But it is very difficult indeed to reverse this pharmaceutical tide. As his interview with Good Health drew to a close, he gave a deep sigh and warned: "We are turning childhood into a disease.
Posted by jonjayray at 12:11 AM