The Dukan Diet: 5 things to know

The Dukan Diet--another twist on high-protein/low-carb--is one of the latest best sellers among fad-diet books. Fad diets are always sold as some magical breakthrough, or magical combination of eating the "right things, in the right way." The reality is that high-protein diets date back over 150 years (to 1860!), and if they actually worked--in the long term--we wouldn't have two-thirds of our population overweight or obese.

Here's five things to think about before choosing to take the plunge:

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