When Colorado became one of the first two states in the nation to legalize retail marijuana, the Colorado Legislature mandated that the Colorado Department of Public Health and Environment (CDPHE) study the potential public health effects of marijuana use.

This website and the 2018 report summary below present information on marijuana use patterns, potential health effects and the most recent scientific findings associated with marijuana use.

This information is the product of the Retail Marijuana Public Health Advisory Committee and is presented as the bi-annual report to the Colorado State Board of Health, the Colorado Department of Revenue and the Colorado General Assembly pursuant to 25-1.5-110, C.R.S.

Monitoring Health Concerns Related to Marijuana in Colorado 2018: Summary
(updated 2/12/18)