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Changes in marijuana policies across states legalizing marijuana for medical and/or recreational use suggest that marijuana is gaining greater acceptance in our society. Thus, it is particularly important for people to understand what is known about the adverse health effects linked to marijuana. With all the hype surrounding marijuana today it can be difficult to find the truth.
Below is a list of reputable research organizations and related websites.
Studies & Reports
2026-2027 SAM Impact Report | January 2026
Drug-involved Infant Deaths in the United States, 2015–2017 | NVSS June 2021
Pediatric cannabis intoxication trends in the pre and post-legalization era | NIH June 2021
Medication Overuse Headache in Chronic Migraine Patients Using Cannabis: A Case-Referent Study | Research Square
Association of Cannabis Use During Adolescence With Neurodevelopment | JAMA Psychiatry June 2021
The association between reasons for first using cannabis, later pattern of use, and risk of first-episode psychosis | NIH November 2023
Recommendations for Reducing the Risk of Cannabis Use-Related Adverse Psychosis Outcomes | Taylor & Francis June 2023
Cannabis Concentration and Health Risks | Washington State Prevention Research Subcommittee Report 2020
Center for Disease Control and Prevention | Marijuana and Public Health
Medscape | Cannabis-Related Disorders Clinical Presentation
National Institute of Drug Abuse
National Institutes of Health | Marijuana Use Disorder Common
National Institutes of Health | Adult Marijuana Use Doubles
SAMHSA | Results from 2024 National Survey on Drug Use and Health (NSDUH)
Related Websites
Sources
Mental Health Studies
Associated with suicidality
Use in Adolescence Linked to Depression, Anxiety, and Suicidality in Young Adulthood
Increased risk for psychiatric disorders, depression, anxiety
Effects on symptoms of psychosis, depression and anxiety
The Health Effects of Cannabis and Cannabinoids
Vaping Studies
Associated with more symptoms of lung damage