I think people worry a lot about skin problems, bacause young people care a lot about their appearance. Their skin changes and it causes pimples, which make them feel uncomfortable in their skin. They are embarrassed and feeling unattractive. But I think stress affects more people. Teens become stressed at school, because they have to study a lot. They often feel depressed. The third important problems are eating disorders. Teenagers don't have enough time to have meals, so they eat in a hurry o