THE CARCINOGENICITY OF
Thirty-three cancer-causing chemicals are present in both marijuana smoke and tobacco smoke.
Exposure to secondhand marijuana smoke may damage blood vessels.
The Retail Marijuana Public Health Advisory Committee systematically reviewed the literature on the health effects of marijuana. This is a summary of the high-level findings from Monitoring Health Concerns Related to Marijuana in Colorado: 2014.
Colorado Department of Public Health and Environment advises that people wait six hours after smoking marijuana before driving and wait eight hours after eating or drinking marijuana before driving. “Using alcohol and marijuana at the same time is likely to result in greater impairment than either one alone.”