Here are two excellent links that give an overview of the biological, chemical, and social issues arising from alcohol use/abuse.
By the end of our unit on alcohol, you should have read both of these site in their entirety.
Percentage of Adults Who Reported Binge Drinking*
* People 18 or older who reported having five
or more drinks on one occasion, one or more times in the past month.
Source: CDC, Behavioral Risk Factor Surveillance System, 2002.