Is 'Dukan' to diet for?

Should you buy this book? It depends on what you think of lists.

If bestseller lists impress, French diet doctor Pierre Dukan's eponymous book topped them. But if a list like U.S. News & World Report's 2012 "Best Diets for Healthy Eating" matters, you might hesitate to follow this plan.

The Dukan Diet's ranking is a dismal 22 -- rated above only the Paleo, Atkins and raw food diets. "If you want a healthy diet, look elsewhere, our panel concluded," it says.