--- title: Marijuana May Help Mental Health Disorders description: A new review suggests marijuana and cannabis may benefit mental health. canonical: https://time.com/4573129/marijuana-cannabis-mental-health/ author: Alexandra Sifferlin article:opinion: false article:content_tier: free article:published_time: 2016-11-16T20:37:36.000Z article:modified_time: 2026-08-04T07:54:57.065Z article:section: Health og:title: Marijuana May Help Mental Health Disorders og:description: A new review suggests marijuana and cannabis may benefit mental health. og:url: https://time.com/4573129/marijuana-cannabis-mental-health/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltce6f371595742f06/69889edff887dc68eae96c13/medical-marijuana-lead.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2000 og:image:height: 1125 og:image:alt: medical-marijuana-lead og:type: article twitter:card: summary_large_image twitter:title: Marijuana May Help Mental Health Disorders twitter:description: A new review suggests marijuana and cannabis may benefit mental health. twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltce6f371595742f06/69889edff887dc68eae96c13/medical-marijuana-lead.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Marijuana Appears to Benefit Mental Health: Study > Sponsored content. 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Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. ## Video: These States Just Legalized Marijuana [Watch (HLS stream): These States Just Legalized Marijuana](https://cdn.jwplayer.com/manifests/DawM64sY.m3u8) (0:58)  _Published 2016-11-10. Here are the results of the marijuana ballot measures_ by [Alexandra Sifferlin](https://time.com/author/alexandra-sifferlin/) ## Alexandra Sifferlin Nov 16, 2016 8:37 PM UTC  Getty Images; Illustration by Kenneth Bachor for TIME by [Alexandra Sifferlin](https://time.com/author/alexandra-sifferlin/) ## Alexandra Sifferlin Nov 16, 2016 8:37 PM UTC Legal access to marijuana, [medicinal or otherwise](http://time.com/4419003/can-medical-marijuana-help-end-the-opioid-epidemic/), is growing. In 2016, four states approved recreational use of the drug and four states passed laws related to medical-cannabis access, bringing the total number of states that allow some form of legal [marijuana](http://time.com/4448757/7-scientific-effects-of-marijuana-that-experts-want-to-study/) use to 28\. Scientists know that marijuana contains more than 100 compounds, called cannabinoids, that have biological effects on the body. Mdically, cannabis can be prescribed for physical ailments like arthritis and cancer symptoms as well as mental health issues like PTSD, depression and anxiety. Still, the role marijuana can play in medicine remains murky. The dearth of research is in large part due to the fact that most studies have focused on illicit use of marijuana rather than its therapeutic potential, and because it’s classified as a schedule 1 drug, making it nearly impossible to study. Looking for answers about marijuana’s potential mental health benefits, a team of researchers in Canada and the U.S. recently conducted a review of the science. In their report, published in the journal _Clinical Psychology Review_, researchers found evidence that cannabis can likely benefit people dealing with depression, social anxiety and PTSD, though it may not be ideal for people with bipolar disorder, for instance, for which there appears to be more negative side effects than positive ones. “This is a substance that has potential use for mental health,” says Zach Walsh, an associate professor of psychology at the University of British Columbia. “We should be looking at it in the same way \[as other drugs\] and be holding it up to the same standard.” Though more research is needed, studies also suggested that cannabis may have a place in dealing with addiction. “We are really excited about the potential substitution effect,” says study author Zach Walsh, an associate professor of psychology at the University of British Columbia. “If people use cannabis as a replacement for opioid medications, or to get off of opioids or cut back, we could see some pretty dramatic public health benefits. The level of opioid overdoses is so high right now.” There’s evidence to support that potential. Another unrelated study suggested that [pot may even have a place in curbing the opioid epidemic](http://time.com/4419003/can-medical-marijuana-help-end-the-opioid-epidemic/). And yet marijuana can be notoriously hard to study in the U.S. because it’s classified as a Schedule 1 drug, which means it has a high potential for abuse. Many scientists and medical professionals think the classification hampers research, and that marijuana’s medical potential merits further exploration. More studies, research advocates argue, would also help eliminate stigma associated with the drug, paving the way for more and better studies. “I think people will derive more benefit if they can speak more openly with providers about whether they are using cannabis and why,” says Walsh. Walsh is a lead investigator on a clinical trial of cannabis that is being funded by a medical cannabis producer called Tilray. Another researcher on the study has been a consultant for other medical cannabis producers. When asked if this represents a conflict of interest, Walsh points out that funding for marijuana-related research is hard to come by. “I think we are entering a different world,” he says, “but for now a lot of the research, at least in Canada, is funded by the producers.” Like any drug, pot can have side effects, and Walsh and other researchers argue that for now, all aspects of cannabis need to be further explored, both benefits and potential harms. ## Transcript [ MUSIC ] ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/4573129/marijuana-cannabis-mental-health/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/4573129/marijuana-cannabis-mental-health/"},"headline":"Marijuana Appears to Benefit Mental Health: Study","datePublished":"2016-11-16T20:37:36.000Z","dateModified":"2026-08-04T07:54:57.065Z","description":"A new review suggests cannabis may help mental health disorders","url":"https://time.com/4573129/marijuana-cannabis-mental-health/","keywords":["Mental Health","Marijuana","Pot","medical marijuana","Addiction","opioids","cannabis"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltce6f371595742f06/69889edff887dc68eae96c13/medical-marijuana-lead.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Alexandra Sifferlin","jobTitle":null,"url":"https://time.com/author/alexandra-sifferlin/"}],"articleSection":"Health","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltce6f371595742f06/69889edff887dc68eae96c13/medical-marijuana-lead.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"medical-marijuana-lead","caption":"","creditText":"Getty Images; Illustration by Kenneth Bachor for TIME","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/mental-health/","name":"Mental Health"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/4573129/marijuana-cannabis-mental-health/","name":"Marijuana Appears to Benefit Mental Health: Study"}}]},{"@context":"https://schema.org","@type":"VideoObject","name":"These States Just Legalized Marijuana","description":"Here are the results of the marijuana ballot measures","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/DawM64sY/poster.jpg?width=720","uploadDate":"2016-11-10T15:29:40.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/DawM64sY.m3u8","embedUrl":"https://time.com/4573129/marijuana-cannabis-mental-health/","duration":"PT58S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/4573129/marijuana-cannabis-mental-health/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}}] ```