Although substances can feel good at first, they can ultimately do a lot of harm to the body and brain. Drinking alcohol, smoking tobacco, taking illegal drugs, and sniffing glue can all cause serious damage to the human body. Some drugs severely impair a person's ability to make healthy choices and decisions. Teens who drink, for example, are more likely to get involved in dangerous situations, such as driving under the influence or having unprotected sex.

And just as there are many kinds of drugs available, there are as many reasons for trying drugs or starting to use drugs regularly. People take drugs just for the pleasure they believe they can bring. Often it's because someone tried to convince them that drugs would make them feel good or that they'd have a better time if they took them.

Some teens believe drugs will help them think better, be more popular, stay more active, or become better athletes. Others are simply curious and figure one try won't hurt. Others want to fit in. A few use drugs to gain attention from their parents. Many teens use drugs because they are depressed or think drugs will help them escape their problems. The truth is, drugs don't solve problems. Drugs simply hide feelings and problems. When a drug wears off, the feelings and problems remain - or become worse. Drugs can ruin every aspect of a person's life.