Obesity in the genes?

Obesity may largely be in the genes, an expert claims today.

Professor Timothy Frayling claims that some people are much more susceptible than others to becoming obese.

In a head to head debate with another professor, Professor Frayling argues that anti-obesity policies should aim to protect susceptible individuals.

Writing in the British Medical Journal, Professor Frayling, of Exeter University, Devon, says the genes operate through appetite control – and policies should aim to help people resist temptation.

He writes: "If true, plans based on changing our environment, such as banning the sale of super-sized sugary drinks, may be more successful than plans to increase awareness through education."

He says research on school-children suggests lack of physical activity is not the main cause of obesity.

But Professor John Wilding, of Liverpool University, UK, blames the epidemic of obesity on changes in the environment in the last 30 years.

He says: "Obesity is a complex disorder with both genetic and environmental causes. The predominant driver is environmental, and changes to the environment will be essential if we are to tackle the current epidemic."

British Medical Journal September 12 2012