Everyone wants to make the best and most informed decisions they can, for themselves and their families. But decisions can only be as good as the facts they are based upon.

We’ve been hearing from a lot of people who would like to see a clear, scientifically-based, unbiased source of information about marijuana and its effects, particularly upon youth. They have found that it can be hard to sort between the information and misinformation swirling around the internet. Here you will find a compilation of the latest findings and research, and we will continue to update the site as new and ongoing studies reach fruition. We encourage you to visit this site on a regular basis, to explore, to share and to have the facts – allowing you to best make the decisions possible for you and your family.

Marijuana FactCheck reviews and tracks verifiable resources via the following criteria:

  • Thorough and significant studies
  • Trustworthy sources: leading institutions, recognized experts and peer-reviewed journal articles
  • As current as possible, conducted within at least the last five years
  • Appropriate sample size, random controls and generalizable data
  • Avoidance of biased sources, out of context reviews or selectively chosen data
  • Transparency about funding and affiliations
  • Considers compiled results of relevant meta-analyses
  • Recognizes limitations that require further study


Ventura County Behavioral Health – Project Lead
Learn about local resources in Ventura County >

Los Angeles County Department of Public Health
Learn about local resources in Los Angeles County >

Orange County Health Care Agency
Learn about local resources in Orange County >

San Bernardino County Behavioral Health
Learn about local resources in San Bernardino County >