If you're looking to trim your chances of processing lung disease, opportunity experts astatine UC San Francisco, past it whitethorn beryllium smart to debar inhaling cannabis.
A caller study successful the Journal of General Internal Medicine found that inhaling marijuana each time is associated pinch a 44% accrued chance of processing asthma. It besides accrued nan likelihood of processing chronic obstructive pulmonary illness (COPD) by 27%.
The COPD consequence whitethorn beryllium understated, since nan illness takes decades to develop, and nan researchers did not person elaborate accusation connected really agelong group successful nan study had been utilizing cannabis.
In defining nan conception of inhaling, nan researchers included smoking, vaping, and alleged "dabbing," which involves breathing successful nan vapors of concentrated marijuana.
The study recovered an relation betwixt elevated risks to a person's lungs and doing immoderate of those things pinch cannabis moreover for those who had ne'er smoked cigarettes.
For this group, inhaling marijuana each time was linked to a 51% accrued likelihood of processing asthma. The relation pinch COPD was besides elevated, but it was not statistically significant.
The study is nan largest yet to analyse nan relation betwixt inhaling cannabis and risks to respiratory wellness among group who person not smoked cigarettes. Of nan 380,000 big participants, astir 222,000 had ne'er smoked tobacco. The information comes from the Behavioral Risk Factor Surveillance System, a nationalist study by nan Centers for Disease Control and Prevention (CDC).
Experts opportunity nan wide legalization of marijuana crossed overmuch of nan state and nan cognition that it is healthier than baccy has led group to minimize nan risks.
The connection astir smoking baccy being bad for you has gotten retired there, but for cannabis, it's overmuch little clear."
Alison Rustagi, MD, PhD, adjunct professor astatine UCSF and first writer of nan paper
"If group are looking to trim their likelihood of processing a chronic lung disease, they should not commencement utilizing cannabis," she said. "And if they already fume cannabis, they should do it little often."
Source:
Journal reference:
Rustagi, A. S., et al. (2025). Inhaled Cannabis, Asthma, and Chronic Obstructive Pulmonary Disease: A Population-Based Cross-Sectional Study of n = 379,049. Journal of General Internal Medicine. doi.org/10.1007/s11606-025-09833-8
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