Conversation so far:
Why is the drinking age in the US 21 and not 18?
In short, we ended up with a national minimum age of 21 because of the National Minimum Drinking Age Act of 1984. This law basically told states that they had to enact a minimum drinking age of 21 or lose up to 10 percent of their federal highway funding.
What were the pros and cons of the the drinking age in the US 21 being and not 18?
If charged with a crime, the 18-year-old is no longer tried in juvenile court; he's tried as an adult. In essence, an 18, 19 and 20-year-old can do everything a 21-year-old can do, except drink alcohol.Of course, no one can ignore that one benefit of the 21-year-old age limit is less drunk driving fatalities.

Question: Tell me about the negative health effects of drinking
Self-contained rewrite: Tell me about the negative health effects of drinking.