Check that you're getting the recommended daily dose of B vitamins, which help important enzymes to function. Cut out all caffeine (found in coffee, tea, chocolate and soft drinks), which is an appetite suppressant.
It is said that you should try to eat quickly. This will bypass the signal from the brain that tells you are full 20 minutes after starting to eat.
See a doctor if symptoms persist. Loss of appetite may be caused by illness. Prolonged appetite loss in a teenage girl, particularly if periods stop, could be anorexia nervosa, a serious disorder that requires a doctor's care.
