Alcohol is an addictive depressant that can cause both short and long term health effects. It is made through the fermentation of sugars by yeast and its effects are influenced by various factors like body size, gender, food, and medicine. Long term heavy drinking can lead to fatty liver, cirrhosis, and hepatitis while binge drinking or alcohol poisoning from too much intake at once can result in mental confusion, coma, vomiting, seizures, irregular heartbeats, and low body temperature. Teens may drink due to social factors but need to understand the health risks.