10 Diets That Just Don't Work


Zone Diet

One of the more effective and less controversial fad diets, the Zone Diet calls for you to maintain a fixed ratio of proteins (30 percent), carbohydrates (40 percent) and fats (30 percent). This makes it easy to follow. Even so, nutritionists and dieticians fear that the Zone promotes eating high amounts of saturated fat, which can be harmful to your cholesterol and can lead to heart disease over a long period. This diet also completely ignores the fact that people may still get hungry and lack energy [source: WebMD].