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Level of Effort: Medium

After 3 months of sticking to Guiliano 's formula, your new habits should be set -- you’re ready to live the French lifestyle. This diet may be too simplistic for you if you have a lot of weight to lose.

Limitations: To jump-start this diet, you will eat only leek soup for the first 48 hours, drinking it every 2-3 hours. For flavor, you can season it lightly with salt and pepper, and you can drink as much water as you like. The diet allows more foods later on.

Cooking and shopping: Most recipes are fairly simple, with fewer than 10 ingredients. Cooking times are not listed with the recipes. Guiliano recommends shopping at markets instead of supermarkets to find in-season ingredients. In the U.S. you might go to a farmer’s market.

Packaged meals or foods? None required.

Exercise: Recommended, but there’s no need to spend hours at the gym with this diet. Walking and light weight lifting are fine.

Does It Allow for Dietary Restrictions or Preferences?

People with varied dietary needs and tastes can do well on this diet.

Vegetarian or vegan: You'll need to alter some of the recipes in the book.

Gluten-free: This diet doesn't ban gluten. You should be able to adapt it to a gluten-free diet, but you'll need to check food labels carefully.

What Else You Should Know

Costs: None beyond your food shopping. But fresh and local foods can be more expensive.

Support: You can do this diet on your own. The diet's official web site has a community, if you want to connect with other people on this plan.

WebMD Medical Reference

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