The Dukan Diet, authored by French doctor Pierre Dukan, is one of the latest best sellers among fad-diet books in the US, and it falls into the high-protein/low-carb approach.

It is not however one of the healthier choices in its genre. Unfortunately, the Dukan Diet is not only extreme in its protein regime, but also cuts out healthy fat sources along with carbohydrates. During its first (Attack) phase you eat only lean proteins, nonfat dairy, and eggs, supplemented with 1½ Tbl. of oat bran per day (no vegetables, grains, fruit, nuts or oils). During its second (Cruise) phase you get to add a selection of (low-carb) vegetables in every other day (still no grains, fruit, nuts or oils). According to Dr. Dukan’s numbers you would spend 2½ months in the Cruise phase to lose 25-pounds, or 4-months to lose 40-pounds. That’s in addition to the week you will probably have spent in the Attack phase.