Ghasemiesfe, Mehrnaz and Barrow, Brooke and Leonard, Samuel (2019) Association between marijuana use and risk of cancer: a systematic review and meta-analysis. JAMA Network Open, 2, (11: e1916318), 10.1001/jamanetworkopen.2019.16318.
External website: https://jamanetwork.com/journals/jamanetworkopen/f...
Question: What is the association between marijuana use and cancer development in adults with at least 1 joint-year exposure (equivalent to 1 joint per day for 1 year)?
Findings: This systematic review and meta-analysis identified 25 English-language studies assessing marijuana use and the risk for developing lung, head and neck, urogenital, and other cancers. In meta-analyses, regular marijuana use was associated with development of testicular germ cell tumors, although the strength of evidence was low; evidence regarding other cancers was insufficient.
Meaning: Sustained marijuana use may increase the risk for testicular cancer, but overall, the association of marijuana use and cancer development remains unclear.
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