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The Flat Belly Diet

By Kathleen M. Zelman, MPH, RD, LD
WebMD Expert Review

The Flat Belly Diet: What It Is

It sounds like a dream come true: Eat certain foods and banish belly fat forever.

The Flat Belly Diet promises a flat belly and weight loss of up to 15 pounds in 32 days. "A flat belly is about food & attitude ... not a single crunch required," it boasts on its cover.

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Written in the first person by Liz Vaccariello, editor in chief of Prevention, along with Cynthia Sass, MPH, RD, nutrition director at Prevention, it is targeted to the millions of Americans who want to notch off a few inches or more off their waistline. After all, who doesn't want a trimmer belly?

The basic Flat Belly Diet plan is a 1,600-calorie Mediterranean-style diet with an emphasis on wholesome, unrefined foods including fruits, vegetables, whole grains, nuts, beans, seeds, lean protein, and very little red meat (once a month). 

According to the authors, the secret ingredient in the Flat Belly Diet that whittles away belly fat is the addition of a monounsaturated fat, or MUFA, at every meal. MUFAs are found in olives, avocados, nuts, seeds, dark chocolate, soybean, flax, and olive and sunflower oils.

"Research shows that MUFAs have health benefits and target belly fat. They also help control satiety, so by adding in one MUFA at meals and snacks it is easier to stick with the plan and lose belly fat," explains co-author Sass.

Before starting on the 28-day plan, dieters go on a 1,200- to 1400-calorie, four-day anti-bloat jump-start period designed to reduce bloating and get dieters in the mind-set of a healthier eating plan. During the jump-start, dieters drink 2 liters of daily "sassy water," a blend of spices, herbs, citrus, and cucumber. "We tested the diet plan on 11 volunteers and they told us the flavored water reduced bloating, constipation, helped them feel better and get rid of that sluggish feeling," explains Sass.

There's a lot of girlfriend-sounding advice from journalist Vaccariello, who is not a medical professional, along with more credible "notes from our nutritionist" that feature registered dietitian Sass. Success stories of the 11-member test panel are sprinkled throughout the book.

Exercise is optional but encouraged. An entire chapter is devoted to the flat belly workout with diagrams of exercises, walking plans, and a 28-day workout plan.

The Flat Belly Diet: What You Can Eat

Whether you are a vegetarian or a meat eater, have food allergies, or are lactose intolerant, this plan can be adapted to meet your individual needs. The plan calls for four, 400-calorie meals spaced every four hours, and each meal includes a MUFA.

Dieters don't count calories. Instead, they choose from a list of 28 interchangeable mix-and-match breakfasts, lunches, dinners and snack packs. Food lists with portion sizes and calories allow flexibility in creating snack packs and can be used whenever you need it most. Eighty recipes are included with nutrient analysis of calories, protein, carbohydrates, total fat, saturated fat, cholesterol, sodium and fiber.

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