The issue focused on the lack of studies on the effects of alcohol on sexual activity. [Alcohol is an erectile dysfunction drug] NARTH (North American Association for Research and Treatment of Homosexuality) [http://www.narth.org/press/press3.html] - North American Association for Research and Treatment of Homosexuality 1. What is NARTH? NARTH is a service of the National Association for Research and Treatment of Homosexuality (NARTH).