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There is an epidemic of obesity in this country, health experts say. But what is obesity? How is it measured?
Dieting is temporary when it comes to losing weight. To keep weight off you actually have to change your lifestyle. Why is it so hard? For one thing, we may not know as much as we think. Take our quiz to test your knowledge.
Find out how much you know about the newest dietary guidelines and how they differ from the old food pyramid.