California Cannabis Consumption (C3)

The California Cannabis Consumption (C3) study is funded by the California Department of Pesticide Regulation (DPR) and is being implemented by Sacramento State University’s Public Health Survey Research Program (PHSRP). This research will assist DPR in protecting the health of cannabis users from pesticide residues in cannabis products by determining the amounts of cannabis products used by consumers. The project will develop and administer a measure of cannabis usage to obtain daily amount of cannabis intake by Californians in order to facilitate the development of pesticide regulations in cannabis farming.

 Information for this study will be collected at cannabis dispensaries throughout California using in-person data collection methods. In addition to the cannabis usage measure, the study will also collect limited demographic information. Interviews will be conducted in both English and Spanish.


 *Pesticides in cannabis: Pesticide contamination in cannabis poses a health risk to cannabis users. However, unlike other crops which have maximum allowable pesticide residue levels set by US EPA (called tolerances), no thresholds have been established for pesticide residues on cannabis. The California Department of Pesticide Regulation has been tasked with providing guidance to the California Bureau of Cannabis Control in developing regulations for pesticide testing of cannabis products prior to sale in a dispensary. Health protective pesticide residue thresholds should be determined based on the critical toxicological endpoints for the pesticide and the amount of the cannabis product a person uses. In short, the research will be used to make cannabis crops healthier for human consumption through the development regulations for pesticide use.

 *Source: The California Department of Pesticide Regulation