Overview

• Analyzing survey data, the study found that daily inhalation of cannabis was associated with 44% higher odds of asthma.
• It also reported a 27% increase in COPD odds, which the authors caution may be understated due to the disease’s long development timeline and limited duration data.
• Among adults who never smoked cigarettes, daily inhalation correlated with a 51% higher likelihood of asthma, while the COPD association was not statistically significant.
• The exposure definition included smoking, vaping and dabbing, capturing multiple common modes of inhaled cannabis use.
• Drawing on about 380,000 U.S. adults in the CDC’s BRFSS and published in the Journal of General Internal Medicine, the UCSF-led team advises against starting inhaled use and recommends reducing frequency for current users.