People tend to go a little crazy when they are on a diet. Why? Because the diets themselves are often crazy. We'd all be acting a little weird if we drank nothing but fruit juice days on end. Dr. Aziz does not buy into the extreme-dieting craze; for him, healthy eating is about balancing hormones (fad diets tend to throw them out of whack). By optimizing the body's levels of 10 key hormones insulin, glucagon, leptin, human growth hormone, thyroid hormone, estrogen, progesterone, testosterone, dehydroepiandrosterone and cortisol people can increase energy and stimulate weight loss. It's based on Aziz's 40-20-40 formula, which calls for 40% of calories from good carbohydrates like beans and whole grains, 20% from protein and 40% from healthy fats. Hey, at least you get to eat.