The purpose of the Center for Medicinal Cannabis Research is to coordinate rigorous scientific studies to assess the safety and efficacy of cannabis and cannabis compounds for treating medical conditions.



Recreational marijuana is legal in California, but stoned driving is still hard to detect

Brad Branan, The Sacramento Bee, January 21, 2018

When a 22-year-old Hayward man allegedly slammed his Cadillac into a California Highway Patrol vehicle and killed Officer Andrew Camilleri on Christmas Eve, he was under the influence of alcohol and marijuana, officials said.

CHP reported that Mohammed Abraar Ali had a blood-alcohol level of .11, above the state limit of .08 for motorists. While it’s not clear how the agency documented Ali’s cannabis consumption, he said he got high at a Christmas party, authorities said.

Proving intoxication from weed is more difficult than it is with alcohol, as law enforcement does not have a device like a breathalyzer for alcohol. Without such a tool, law enforcement must rely more on roadside sobriety tests.

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California weed researcher explains why we know so little about marijuana health claims

Amy Martyn,, January 15, 2018

California’s Proposition 64 did more than legalize recreational weed. The voter-approved measure also stipulated that researchers combat stoned driving by finding marijuana’s equivalent to the breathalyser with a grant from California Highway Patrol.

Responsible for those studies is a team of psychiatrists at the University of California Center for Medicinal Cannabis Research (CMCR), a publicly-funded lab established twenty years ago for the sole purpose of studying weed.

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With Pot Soon Legal, CHP Warns: Drive High, Get A DUI

CBS News, December 27, 2017

With marijuana becoming legal on Monday, across California freeways the message is clear: “Drive High, Get A DUI.”

It’s the CHP’s latest campaign to also keep stoned as well as drunk drivers off the road.

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Simulator aims to help police test whether a person is too high to drive

CBS News, December 20, 2017

The new year will mark the official start of recreational marijuana sales in California, and there are fears it could lead to more impaired driving. Among U.S. drivers killed in crashes who tested positive for drugs, more than a third in 2015 had used marijuana.

At the University of California San Diego, researchers are trying to help police detect whether a person is too high to get behind the wheel.

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Recreational marijuana sales start Jan. 1. Here's how weed does, and doesn't affect your health

Gary Robbins, San Diego Union Tribune, December 4, 2017

The FDA cried fraud in October, accusing companies in Florida, Colorado and California of illegally selling marijuana-derived products that supposedly could prevent, treat or cure cancer.

The advertising claims were unsubstantiated, said the FDA, and the products hadn’t been submitted for approval.

It was a public shaming that also served as a timely buyer-beware message for California, where the sale of marijuana will be expanded from medical purposes to recreational use in January.

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Thomas Marcotte, PhD

Presentation before the Canadian House of Commons
(September 2017)

Igor Grant, MD

UC San Diego Department of Psychiatry Grand Rounds: Medicinal Cannabis
(July 2017)

Igor Grant, MD

American Psychological Association Plenary Address: Marijuana as Medicine: Can we see past the smoke?
Denver, CO (August 2016)

Barth Wilsey, MD

Marijuana and Cannabinoids: A Neuroscience Research Summit;
Bethesda, MD (March 2016)


Igor Grant, MD, FRCP(C) American Association for the Advancement of Science Annual Meeting

McGill University Health Centre - Research Institute
(February 2015)

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