Diet vs. Exercise: Which is More Important for Weight Loss?

A 2011 survey found that, “Among Americans who report trying to lose or maintain weight, 70% believe both physical activity and monitoring food and beverage consumption are equally important in weight management.”  Nineteen percent thought that exercise was more important,  while only 11% said they felt diet was key.* 

According to Michael Greger, MD of, most of them were wrong.  In this short video, he discusses why what we eat has a greater impact on weight loss and weight maintenance than how much we exercise. 


Dr. Greger writes a regular blog and produces daily videos on nutritional research from around the world for his Website

*These survey findings were reported from the 2011 Food & Health Survey: Consumer Attitudes Toward Food Safety, Nutrition & Health , commissioned by the International Food Information Council Foundation.

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