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[DOI] [PubMed] [Google Scholar] 32.Moffatt RJ, Biggerstaff KD, Stamford BA

Other research on cannabis, tobacco and lung health The above study is by far the most in-depth, providing insight into long-term cannabis use and tobacco use side by side

The most significant aspect of illicit marijuana use is that it can expose users to markets where other drugs are sold

Given that COPD diagnoses are rarely made before age 40, and consistent with national COPD cohorts, 21-23 we limited our sample to adults aged 40 years who have ever had a COPD diagnosis at Wave 5 for the cross-sectional analyses (N=1670)

Participants included people who had smoked more than 5 combustible cigarettes a day for a year or longer