The physical effects of marijuana use, particularly on developing adolescents, can be acute. A recent study of 1,023 trauma patients admitted to a shock trauma unit found that one-third had marijuana in their blood. Although many people smoke because they believe cigarettes calm their nerves, smoking releases epinephrine, a hormone which creates physiological stress in the smoker, rather than relaxation. The use of tobacco is addictive. Most users develop tolerance for nicotine and need greater amounts to produce a desired effect.
Cigarettes are highly addictive.
About Alcohol Alcohol abuse is a pattern of problem drinking that results in health consequences, social, problems, or both. However, alcohol dependence, or alcoholism, refers to a disease that is characterized by abnormal alcohol-seeking behavior that leads to impaired control over drinking. Talk to school counselor, a friend, or a parent. About Methamphetamine Methamphetamine is a stimulant drug chemically related to amphetamine but with stronger effects on the central nervous system. Methamphetamine is used in pill form, or in powdered form by snorting or injecting.