They will eat very small amounts of food - inadequate amounts to support normal growth and health. Some refuse to eat at all. This condition is known as anorexia nervosa . Both conditions are potentially life threatening. If you suspect either condition, talk to your child and seek medical treatment from a doctor or registered dietitian.
Teenage boys are prone to nutritional problems as well.
Many adolescent boys yearn to be bigger or heavier. Beware of nutritional supplements that promise more muscles. If a teen is eating properly and consuming the right amount of a variety of foods, nutritional supplements are just a waste of money. If you are concerned about your teenager's eating habits, talk with your child's doctor. Counseling is often an effective way to get kids back on track.