By Fran Lowry
The Heart WireThe amount of food Americans eat has been increasing since the 1970s, and that alone is the cause of the obesity epidemic in the US today [1]. Physical activity—or the lack thereof—has played virtually no role in the rising number of expanding American waistlines, according to research presented at the 2009 European Congress on Obesity in Amsterdam last week.
The finding is contrary to the widely held assumption that decreased physical activity is an equally important driver of overweight and obesity in the US, said lead author Dr Boyd Swinburn (Deakin University, Melbourne, Australia).
If Americans want to get serious about winning the battle of the bulge, they are going to have to cut down on the amount of food they eat, Swinburn, who is director of the World Health Organization Collaborating Centre for Obesity Prevention, told heartwire.
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