July 1972

Psychiatric Effects of Hashish

Author Affiliations

USA, USA, Heidelberg, West Germany
From the Special Action Office for Drug Abuse, HQ, USAREUR & Seventh Army, Heidelberg, West Germany. Dr. Tennant is currently at the Department of Preventive & Social Medicine, UCLA, School of Public Health, Los Angeles.

Arch Gen Psychiatry. 1972;27(1):133-136. doi:10.1001/archpsyc.1972.01750250117016

An American Army population of 36,000 in which hashish was commonly smoked was studied over a three-year period. Direct medical and psychiatric observations of 720 hashish smokers revealed that the casual smoking of less than 10 to 12 gm of hashish monthly resulted in no ostensible adverse effects other than minor respiratory ailments. Panic reactions, toxic psychosis, and schizophrenic reactions were infrequent occurrences except when hashish was simultaneously consumed with alcohol or other psychoactive drugs. Highdose hashish abuse of over 50 gm per month in 110 patients was associated with a chronic intoxicated state characterized by apathy, dullness, and lethargy with mild-to-severe impairment of judgment, concentration, and memory. Severe hashish abuse and its simultaneous use with alcohol or other psychoactive drugs by large numbers of young American men is alarming.