Legal or not, marijuana can increase the risk of developing alcohol use disorders

Researchers scrutinized four transitions in AUD development using data on adolescents and young adults from high-risk families: time to first drink, first drink to first problem, first drink to first diagnosis, and first problem to first diagnosis. Potential influences included parental AUD, parental separation, peer substance use, ever use of marijuana by offspring, trauma exposures, and different psychopathologies across transitions.
Results showed that significant influences across all transitions were fairly consistent, with externalizing psychopathologies and ever use of marijuana increasing the likelihood of transition at each stage. Peer and parental influences -- especially maternal AUD -- were linked to initiation and some later stages. Given increasingly permissive attitudes toward marijuana use in the United States, the authors suggest that more research be directed toward understanding the association of AUD development with marijuana use.

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