DUKAN DIET

There’s no limit to how much you can eat during the plan’s four phases, providing you stick to the rules of the plan. During phase one, you’re on a strict lean protein diet. This is based on a list of 72 reasonably low-fat protein-rich foods, such as chicken, turkey, eggs, fish and fatfree dairy. This is for an average of five days to achieve quick weight loss. Carbs are off limits. Unlike the Atkins Diet, Dukan’s phase one bans vegetables and seriously restricts fat. The next three phases of the plan see the gradual introduction of some fruit, vegetables and carbs, and eventually all foods. There’s no time limit to the final phase, which involves having a protein-only day once a week and getting regular exercise.

PROS

It’s a very strict and prescriptive diet, and some people like that. It’s easy to follow. You don’t need to weigh food or count calories. There’s no restriction on how much you can eat during your first two weeks.

CONS

The lack of whole grains, fruit and vegetables in the early stages of the diet could cause problems such as constipation.

VERDICT

This diet isn’t nutritionally balanced, which is acknowledged by the fact that you need a vitamin supplement and a fiber top-up in the form of oat bran. There’s a danger that this type of diet could increase your risk of long-term health problems if you don’t stick to the rules.