Alcohol is a dangerous and addictive drug that causes more deaths than marijuana or other drugs. Alcoholism is a disease where the body develops a need for alcohol and can experience psychological changes without it. Drinking alcohol causes loss of control and dangerous behaviors like violence. Teenagers are especially vulnerable to alcohol addiction, which can cause emotional changes, and sometimes drink to fit in even if they don't feel the need. Statistics show Europe consumes the most alcohol, and men drink more than women.