What's more important in the obesity battle -- physical activity or medical treatment?

Experts disagree in the British Medical Journal today about the best way to tackle the obesity crisis. While Professor Louise Baur and colleagues from the Children's Hospital at Westmead and the University of Sydney in Australia acknowledge that "physical inactivity is a major contributor to the global burden of disease," they says that it would be wrong to only focus on this and ignore the problem of obesity.

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