References

 
Most of the information about the frequency of and health effects of marijuana use is from the Colorado Department of Public Health and Environment: Retail Marijuana Public Health Advisory Committee's Monitoring Health Concerns Related to Marijuana in Colorado: 2016. Public health statements include information on dose response, cognitive, mental health, respiratory and extra-pulmonary effects, and injury and impacts on youth and pregnant/breastfeeding women. Since the report is quite long, you can access the health statements broken out by health issue on the CDPHE’s site.
 
Additional resources include:
If you have specific questions about any of the data or health research used, please contact us at marijuanainfo@state.co.us.