You'll find lean, satiating protein in every single bite you take on Zero Belly Diet. The muscle-building macronutrient is fundamental to the plan, and eggs happen to be one of the easiest and most versatile delivery systems in the universe. Not only that, they're also the number-one dietary source of a nutrient called choline. Choline, which is found also in lean meats, seafood, and collard greens, attacks the gene mechanism that triggers your body to store fat around your liver. (That's why eggs are one of the best foods for weight loss.) One Zero Belly Diet recipe—a breakfast hash with sweet potatoes and fresh farm eggs—became test panelist Morgan Minor's go-to breakfast, and after just three weeks on the program, the female firefighter lost 11 pounds and 4 inches from her waist! The more eggs you eat, the less egg-shaped you get.
What causes it? Your genes, for one thing. "Some families just carry most of their weight in their bellies, no matter how thin they are," says Caroline Cederquist, M.D., author of The MD Factor Diet. But visceral fat gets worse for all of us as we get older, especially if we're under a lot of stress or not sleeping well, says nutritionist Sara Vance, author of The Perfect Metabolism Plan. That's thanks to hormones that make us hungrier even as our bodies are practically hoarding fat.