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The Promise

Can you lose weight by learning to feel full with less food? “The Full Diet” says it can train your brain to do just that.

You don't have to count calories or eliminate any foods. Instead, by learning how to eat the right types of food (such as lean proteins and high-fiber foods) and understanding how your body handles appetite, you'll know how to feel full on less.

“The Full Diet” targets people who want to lose about 5 to 80 pounds but are not morbidly obese. Plan creator and weight loss surgeon Michael Snyder says you can expect to lose a pound or 2 a week.

There are two ways to work the diet. One is to start with a 4-week beginning phase designed to help you drop pounds quickly. Then you'll do a maintenance phase, in which you'll lose weight more slowly.

Or you may skip the beginning phase and start with the maintenance phase, but it will take you longer to lose the weight.

What You Can Eat and What You Can't

No foods are off-limits in this diet, but think twice before eating enriched flour. Focus on fiber, lean proteins like white-meat chicken, and unsaturated fats like nuts and avocados.

The diet includes a list of recommended foods under different food groups like vegetables, fruits, fiber, protein, and fats.

You can have two indulgences, like french fries and alcohol, per week.

Level of Effort: Low

Limitations: There aren't many limitations. You have a lot of flexibility in what you can eat.

Cooking and shopping: Your cooking and shopping routines shouldn't change much. You can find most of the items at your regular grocery store.

Packaged foods or meals: None required, but there are Fullbar products for sale to complement the plan. These include snack bars (Fullbars), diet gum, and diet pills. Snyder claims these products will help you lose weight and feel full.

In-person meetings: No.

Exercise: The plan recommends exercising 5 days a week.

Does It Allow for Dietary Restrictions or Preferences?

Vegetarians and vegans: This diet could work for you.

Gluten-free diet: Check food labels for possible sources of gluten. Not all of the Fullbar products are gluten-free.

What Else You Should Know

Cost: The diet doesn't have any fees. The only cost will be your regular grocery bill, unless you decide to buy some of the Fullbar products, which cost up to about $50.

Support: You do this diet on your own, although there is a web site selling the Fullbar products and describing the diet.

WebMD Medical Reference

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