Many people think cannabis smoke is harmless − a physician explains how that belief can put people at risk

Clinical trials have demonstrated the health benefits of cannabis for certain conditions, but many aren’t testing smoked or vaped forms. Research on cannabis smoke is raising concerns.
Cannabis smoke shares many of the same toxins and carcinogens as tobacco smoke. Tunatura/iStock via Getty Images Plus
Though tobacco use is declining among adults in the U.S., cannabis use is increa…