From the March 2011 magazine.

March 2011: Alcoholism At Large

Men had greater dopamine release than women.

New insight found on male alcoholism

The fact that men are twice as likely as women to develop alcoholism is common knowledge. Until now, the underlying biology contributing to this difference in vulnerability has remained unclear.

Based on a 2010 study, researchers from Columbia and Yale universities believe dopamine is the key factor influencing this gender difference. The scientists studied male and female college-aged social drinkers in a laboratory test of alcohol consumption.

After consuming an alcoholic or nonalcoholic drink, each...