How diet can improve teen health

Some teens try to lose weight by eating very little; cutting out whole groups of foods like foods with carbohydrates, or “carbs;” skipping meals; or fasting. These approaches to losing weight could be unhealthy because they may leave out important nutrients your body needs. In fact, unhealthy dieting could get in the way of trying to manage your weight because it may lead to a cycle of eating very little and then overeating because you get too hungry. Unhealthy dieting could also affect your mood and how you grow.

https://www.niddk.nih.gov/health-information/weight-management/take-charge-health-guide-teenagers