It's better not to eat at this age. Diet pills will rebound, mainly by exercise. Be sure to eat early and eat the rich food in protein. Drink oatmeal milk well, and don't go on a diet too much, because the less you eat, the less metabolic enzymes are secreted in your body, so some people always say that you are fat when you drink water. Now you are only 15 years old. Just eat a balanced diet and exercise moderately. Don't.