Study: Marijuana Use Not Associated with Increased Risk of Pneumonia

Los Angeles, CA: Cannabis consumption is not associated with an increased risk of pneumonia among non-heterosexual men either with or without HIV, according to data published in the journal Annals of Epidemiology.

Researchers affiliated with the University of California, Los Angeles assessed the relationship between cannabis use and the risk of pneumonia among a cohort of men who have sex with men (the Multicenter AIDS Cohort Study) over a period of nearly three decades (1984-2013). Nearly 2,800 HIV-positive men and approximately 2,700 HIV-negative men were included in the study.

Authors reported that neither weekly nor daily marijuana use was significantly associated with elevated incidences of pneumonia.

They concluded: “Data … does not provide evidence of a significant association between marijuana use and pneumonia incidence. … By relying on a population of men who have sex with men, the results may not generalize to other populations such as men who do not have sex with men or to women. Nonetheless, the results and conclusions for the HIV-uninfected group are potentially informative and relevant to the general population.”

Full text of the study, “Marijuana use and pneumonia risk in a cohort of HIV-infected and HIV-uninfected men,” appears in Annals of Epidemiology.