The leading cause of death among teens is alcohol-related traffic accidents. Alcohol also causes heart disease, high blood pressure, liver damage, brain damage, and also contributes to many other health problems. Once alcohol is absorbed into the bloodstream, it acts upon the central nervous system like a depressant, affecting speech, vision, and coordination. The physical effects of alcohol depend on many factors, including the amount of alcohol consumed over time, the emotional state and body weight of the drinker, the concentration of the drink, and the amount of food in the stomach at the time of consumption. Smaller doses of alcohol may cause euphoria and a mild relaxed feeling.
Intoxication occurs when higher doses are taken.
Physical responses to increased doses of alcohol include altered perception, impaired judgment, loss of coordination, staggered walk, blurred vision, bloodshot eyes, slurred speech, dizziness, nausea, and vomiting. An overdose of alcohol can cause unconsciousness, respiratory failure, and death. Alcohol is an addictive drug. The medical term for this addiction is called alcoholism. Research suggests that alcoholism may be a genetic predisposition, and that a child of an alcoholic parent runs a much greater risk of becoming an alcoholic.