What is Disrupts normal brain development, Liver damage and cirrhosis of the liver, Brain cells die decreasing brain mass, Stomach and intestinal ulcers and destroyed organs, Blood pressure increases causing heart disease, heart attack, stroke, Male sperm production decreases, Lower levels of iron and vitamin B causing anemia, Alcoholism, Death, and Fetal alcohol syndrome in unborn children.
http://www2.courtinfo.ca.gov/stopteendui/teens/resources/substances/alcohol/short-and-long-term-effects.cfm