Mclean Hospital

Marijuana Related Content


Foundation Gift Enables Cannabis Research

For a substance that has been used by humans for more than 5,000 years, there remains much to learn about marijuana’s effects on the brain. McLean neuroscientist and clinical researcher Staci Gruber, PhD, has spent more than two decades trying to advance knowledge in this domain. Now, with the help of a $1.5 million grant from the Patricia Cornwell Foundation, a nonprofit organization...

The Consequences of Marijuana Legalization: A Behavioral and Mental Health Perspective

As clinicians and researchers at McLean Hospital, where we see individuals who have problems with marijuana use as well as other mental health conditions, we would like to provide information about the adverse health consequences of marijuana and its legalization for recreational use. The legalization of marijuana for recreational use is proposed in Ballot Question 4. We believe that a “yes...

Marijuana Use Among Young People

In my research, I primarily focus on the neurocognitive effects of substance use, particularly marijuana. This includes medical marijuana and recreational marijuana. Much of my recent work has explored the effects of recreational marijuana use on younger patients. Below are my answers to a few common questions about this area of study. What has been the focus of your work? In addition to work...

McLean Hospital Study Finds That Medical Marijuana Use May Improve Cognitive Performance

Preliminary evidence from a new study led by McLean Hospital’s Staci Gruber, PhD, director of the Marijuana Investigations for Neuroscientific Discovery (MIND) program, suggests that medical marijuana may not impair, and in many cases, may actually improve executive functioning in adults. “After three months of medical marijuana treatment, patients actually performed better, in terms...

The Marijuana Debate: A Conversation with Staci Gruber, PhD

For more than 20 years, Staci Gruber, PhD, director of McLean Hospital’s Cognitive and Clinical Neuroimaging Core and associate professor of psychiatry at Harvard Medical School, has dedicated her work to uncovering the mysteries of marijuana. As the country continues to debate the pros and cons of the legalization of marijuana and medical marijuana, Dr. Gruber’s work has never been...

Uncovering the Mysteries of Marijuana

With a drive to better understand the effects of medical marijuana, in 2014, Staci Gruber, PhD, launched a landmark new program known as the Marijuana Investigations for Neuroscientific Discovery (MIND) program. Made possible thanks to an initial gift from best-selling crime writer Patricia Cornwell, MIND is focused on exploring the effects of medical marijuana on cognition, brain structure, and...

McLean Hospital’s Staci Gruber to be Featured on CNN’s “Weed 3” This Sunday

Staci Gruber, PhD, director of McLean Hospital’s Cognitive and Clinical Neuroimaging Core (CCNC) and one of the world’s foremost experts on marijuana and its effects on the brain will be featured in “Weed 3,” airing on CNN this Sunday, April 19, at 9 pm. Dr. Staci Gruber, left, talks about her medical marijuana study with CNN’s Dr. Sanjay Gupta during an interview...

McLean Hospital and Harvard Medical School Researchers to Conduct Revolutionary Study on Medical Marijuana and the Brain

Thanks to a $500,000 gift from international best-selling author and mental health advocate Patricia Cornwell, McLean Hospital and Harvard Medical School researchers will launch a landmark new program that will more fully explore the potential impact of medical marijuana on cognition, brain structure and function. This first-of-its-kind program, known as the Marijuana Investigations for...

McLean Study Shows Greater Cognitive Deficits in Marijuana Users Who Start Young

Researchers at Harvard-affiliated McLean Hospital have shown that those who start using marijuana at a young age are more impaired on tests of cognitive function than those who start smoking at a later age. In a paper that will be presented on Monday, Nov. 15 at the annual meeting of the Society for Neuroscience in San Diego, Staci A. Gruber, PhD, reported that subjects who started using...

Fighting the Myth of Marijuana: Clinical Investigator Addresses Marijuana Dependence

As a psychiatrist working in McLean’s Alcohol and Drug Abuse Treatment Program, Kevin Hill, MD, MHS, recognizes the reality of relapse—and the perseverance patients need to overcome their drug dependence. Every day, Hill treats individuals addicted to a range of substances and witnesses their struggles as they battle addiction. Kevin Hill, MD, MHS“Compared to other psychiatric...

Staci Gruber, PhD

Dr. Gruber is director of the CCNC and associate professor of psychiatry at Harvard Medical School. Her clinical and research focus is the application of neurocognitive models and multimodal brain imaging to better characterize neurobiological risk factors for substance abuse and psychopathology. Dr. Gruber’s lab has examined the etiologic bases of neural models of dysfunction in patients...

Gen Kanayama, MD, PhD

As an MD, PhD at Osaka University, Dr. Gen Kanayama developed an animal model for Alzheimer’s disease, showing that repeated mild mechanical brain injury may trigger cytoskeletal change, similar to that in human Alzheimer’s disease. He also worked as a staff psychiatrist at Mihara and Sanda Kogen Hospitals, where he treated patients suffering from dementia, Parkinson's disease, and...

Roger D. Weiss, MD

Dr. Weiss’ career has focused on treatment and clinical research with substance-dependent patients. He has received numerous NIH grants, including for developing integrated group therapy, an evidence-based treatment for co-occurring bipolar and substance use disorders, and leading a multi-site treatment study of prescription opioid dependence. He has authored over 300 publications,...