Weight gain and obesity are present in epidemic proportions in the United States. Over 20 million women are overweight according to documented standards of normal body fat and weight for a given height. Dieting is often unsuccessful in achieving sustained weight loss because it results in an increase of the brain neurotransmitters, which increases appetite. Fortunately, you can now buy natural appetite suppressants, which provide the amino acid precursors that control appetite and suppress hunger. These natural appetite suppressants should be used in conjunction with a balanced modified zone diet. High-carbohydrate, low-fat diets usually fail in this area. The modified zone diet achieves weight loss, lowers blood lipids, suppresses insulin levels, and allows a wider variety of food choices.