Research from the University of California, San Francisco has revealed connections between cannabis smoking and serious respiratory conditions, prompting health experts to issue warnings about the practice.

Published in the Journal of General Internal Medicine, the research demonstrates that daily cannabis inhalation increases the likelihood of developing asthma by 44%. The study also identified a 27% elevated risk of chronic obstructive pulmonary disease (COPD) amongst regular users.

The findings emerge at a critical time, as cannabis legalisation spreads across much of the United States and perceptions about its safety continue to evolve. Many people incorrectly assume that marijuana use carries fewer health consequences than traditional tobacco smoking.

Significant risks for non-tobacco users

Perhaps most concerning is the study’s discovery that cannabis smoking poses substantial dangers even for individuals who have never used cigarettes. Among this group, daily cannabis inhalation was associated with a 51% increased likelihood of developing asthma.

Dr Alison Rustagi, assistant professor at UCSF and the study’s lead author, emphasised the urgent need for public awareness. “The message about smoking tobacco being bad for you has got out there, but for cannabis, it’s much less clear,” she explained.

The research examined multiple methods of cannabis inhalation, including traditional smoking, vaping, and “dabbing” – a technique involving concentrated marijuana vapours. All three methods demonstrated associations with elevated respiratory risks.

Largest study of its kind

With nearly 380,000 adult participants, this represents the most comprehensive investigation to date examining cannabis smoking and lung health among non-cigarette users. Of the total participants, approximately 222,000 had never smoked tobacco.

The data originated from the Behavioral Risk Factor Surveillance System, a national survey conducted by the Centers for Disease Control and Prevention (CDC). This robust dataset allowed researchers to draw meaningful conclusions about cannabis inhalation patterns and health outcomes.

Researchers acknowledge that COPD risks may actually be higher than reported, since the condition typically requires decades to develop. The study lacked detailed historical information about participants’ duration of cannabis use, potentially underestimating the true impact.

Clear guidance for users

Health experts are delivering straightforward advice based on these findings. Dr Rustagi stated: “If people are looking to reduce their likelihood of developing a chronic lung disease, they should not start using cannabis. And if they already smoke cannabis, they should do it less often.”

The research challenges widespread assumptions about cannabis being a safer alternative to tobacco. Whilst public health campaigns have successfully highlighted tobacco’s dangers, similar awareness about cannabis smoking remains limited.

The study’s findings suggest that any form of regular cannabis inhalation – whether through conventional smoking, modern vaping devices, or concentrated dabbing – carries measurable risks to respiratory health. These risks persist regardless of tobacco use history.

As cannabis legalisation continues to expand, these findings underscore the importance of informed decision-making about consumption methods. Individuals concerned about respiratory health may wish to consider alternative approaches or avoid cannabis use altogether.

Source: News-Medical.net