Mental Health and marijuana (PTSD, depression, anxiety, suicide and psychosis):
Cannabis usage dramatically drives psychotic mental problems in frequent users.
American Journal of Psychiatry: the trajectory of cannabis use disorder.
The Atlantic: “Marijuana is too strong now.”
Australian News Broadcasting Corp.: doctors warn of significant increase of hospitalizations with psychosis after being prescribed with medical cannabis.
Biomolecules Journal: meta-analysis study (March 2025) of causal evidence shows at least a 2x risk for developing psychosis and even schizophrenia among teens.
British Journal of Psychiatry: 2018 study showingrisk of psychosis in adolescent cannabis use.
CBN News: marijuana use causing severe mental illness and psychosis (video).
CBN News: “My son’s marijuana use caused him to take his life” (video).
City Journal (NY): Marijuana and the mentally ill: legalization is pushing community mental health to the brink.
Drug and Alcohol Dependence Journal: new Sorbonne study (2025) shows clear linkbetween youth suicidality, depression and marijuana use.
Edmonton Journal: descent into cannabis-induced psychosis: one family’s horror.
Fox 5 San Diego: new report (July 2025) from the S.D. High Intensity Drug Trafficking Area shows that 43% of suicides under 25 years old related to THC use.
Fox News: Dr. Drew Pinsky warns about marijuana induced psychosis.
JAMA: new study (2024) in Ontario, Canada shows a 3x increase in schizophrenia cases since legalization of marijuana.
Journal of Addictive Behaviors: 2018 study showing the association between adolescent cannabis use and anxiety.
Journal of American Academy of Child and Adolescent Psychiatry: association between cannabis use and suicide in adolescents.
Journal of Psychological Medicine: 2024 study showing that teens who use cannabis are 11 times more likely to develop a psychotic disorder.
Illinois (Center Square): one Illinois county attaching label: “WARNING: Cannabis use may contribute to mental health problems, including psychotic disorders such as schizophrenia, increased thoughts of suicide and suicide attempts, anxiety, and depression. Risk is greatest for frequent users.”
KentWired (2024): cannabis-induced psychosis cost their sons their lives.
News Nation Now: video (Oct. 2024) on Banfield “How Does Weed Trigger a Psychotic Break”
Newsweek: drugs are making our national mental health crisis worse.
Newsweek (2024): she lost her son to marijuana: “It just devastated him”
Newswise: suicidal thoughts in high school students.
Neuroscience News (July 2025): genetic link between cannabis use disorder (CUD) and mental health.
NPR (2/21/26): new study in JAMA shows significant link between teen cannabis use and psychosis, depression and anxiety.
NY Times: as America’s marijuana use grows, so do the harms.
OPLM (Other Parents Like Me): “I was wrong about cannabis: a clinician’s firsthand account of how marijuana is harming adolescent mental health.”
PLOS One: recent study (2023) shows there is a significant link between Cannabis Use Disorder and Suicide.
Psychiatry Advisor: cannabis-induced psychosis in teenagers and young adults.
Psychiatry online: evidence is mounting that connects cannabis to youth depression and suicide.
Psychology Today: the many risks of cannabis and high-dose THC, especially on youth brains.
SAMHSA.gov: infographic “Marijuana: know the negative effects and risks.”
The Telegraph (U.K.): extra-strong cannabis changes users’ DNA, study (11/2024) finds.
US Magazine: comedian Pete Davidson says using marijuana “gave me psychosis.”
U.S. News and World Report: teen cannabis users’ risk for psychosis higher than thought.
Violence and crime:
“But marijuana only makes people chill; there’s no evidence of violence among cannabis users”
Alex Berenson: author of “Tell Your Children: The Truth about Marijuana, Mental Illness and Violence” (2019 book).
Alex Berenson: marijuana use and violence (video from Hillsdale College).
Every Brain Matters: a vicious high: link between marijuana and violence.
Every Brain Matters: video testimony (May 2024) of Pastor Glenn Germany who was confronted by a gun-wielding man suffering from cannabis-induced psychosis.
Fox News: pot psychosis and violence.
Journal of Criminal Justice (study 2021): study reveals increases in property and violent crimes in Oregon since legalization.
International Journal of Drug Policy: this new study (2024) shows the link between cannabis and violence.
NY Post (9/2025): “Big weed’s boost will bring more deranged violence, like in Minnesota.”
NY Post (9/2025): “Anti-ICE shooter was lazy stoner who moved to D.C. for more pot; he was ‘all about the weed’ according to his ex boss.”
The Times: “I know cannabis isn’t safe—it made me stab my friend to death.”
Sexual assault and marijuana use:
The Daily Evergreen: when marijuana makes consent turn hazy.
The Spectator: blurry line between marijuana and sexual assaults.
Dependence and addiction:
AP: daily marijuana use outpaces alcohol daily use for the first time.
Daily Caller: marijuana companies have ramped up their lobbying spending and pressure in 2024, even though more studies are proving the negative effects of its use.
Psychology Today: the high rate of dependence among medical cannabis users.
ScienceAlert.com: study shows that cannabis use is linked to epigenetic changes.