Many people think cannabis smoke is harmless − a physician explains how that belief can put people at risk
- Written by Beth Cohen, Professor of Medicine, University of California, San Francisco
Cannabis smoke shares many of the same toxins and carcinogens as tobacco smoke.Tunatura/iStock via Getty Images PlusThough tobacco use is declining among adults in the U.S., cannabis use is increasing. Laws and policies regulating the use of tobacco and cannabis are also moving in different directions.
Tobacco policies are becoming more...





