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The effect of alcohol and smoking on testosterone function and aggression in chronic alcoholics.

Forty alcoholics without other significant medical or psychiatric problems were studied on a research ward for two weeks. All subjects abstained from alcohol and cigarettes during the first week; 30 randomly selected subjects were permitted unlimited alcohol and/or cigarettes during the second week. Plasma testosterone levels were normal during the first week but decreased rapidly and significantly in those subjects allowed alcohol. A variety of measures of affect failed to show a significant correlation between hostility/aggression and plasma testosterone levels or alcohol ingestion.