#CannabisClaims is a campaign by scientists and academics to set the record straight on thirteen of the most oft-repeated claims on cannabis use and regulation, none of which are strongly supported by the scientific evidence.

As more and more jurisdictions reconsider their cannabis policies, the public discourse is filled with conflicting evidence about the impacts of cannabis use and regulation. Cannabis causes schizophrenia. Cannabis is as addictive as heroin. Cannabis regulation leads to increased traffic fatalities. We hear claims like these all the time – but are they based on science? In our latest reports, the ICSDP investigates and provides comprehensive evaluations of the evidence for and against each claim.


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Read the full report in Spanish
Read the summary report in Spanish
See all the easy-to-use graphics in Spanish

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Read the press release
Read about the methodology used

Given that policy decisions are influenced by public opinion and media reports, an inaccurate understanding of the evidence can lead to ineffective or harmful policy. That’s why many scientists are increasingly frustrated by the disregard of evidence on cannabis use and regulation.

The ICSDP will be releasing insights and tools to counter the rhetoric on cannabis and push for evidence-based cannabis policy. Make sure you have signed up for the ICSDP newsletter to get these updates. You can also check them out below and on our blog once they've been released.

Update One - Impact of Cannabis Regulation on Availability and Number of Users
Update Two - Cannabis Potency & Impact of Cannabis Use on Heart and Lungs
Update Three - It's Not Inevitable: "Big Marijuana"
Update Four - Cannabis Addiction and Cannabis as a Gateway Drug
Update Five - Impact of Regulation on Drug Crime & Impaired Driving
Update Six - Cannabis and the Brain
Update Seven - Cannabis Tourism

To help separate science from conjecture, scientists and academics will be holding an ongoing conversation on Twitter using the hashtag #CannabisClaims at the @icdsp handle beginning on August 12. Join the conversation online to ask experts your questions on cannabis claims.

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