Recent medical research has consistently linked adolescent cannabis use with a higher frequency of poor mental health later in life, compared to those who never used cannabis. This includes an increased risk of psychosis, though the causality of that link isn’t completely understood.… Read the rest
Announcing the Johnny’s Ambassadors Community Conversations U.S. Tour
Educating Communities About the Dangers of Youth THC Use
Coming to 10 Cities Near You!
All Community Conversations are from 6:00 PM to 7:30 PM. Laura will give a one-hour presentation, followed by 30 minutes of Q&A. The ENTIRE COMMUNITY is invited: parents (and older teens over 16), schools, healthcare and prevention professionals, legislators, community coalitions, law enforcement, and small businesses.… Read the rest
Johnny’s Ambassadors at the United Nations
What an incredible week we had in Vienna at the United Nations Commission on Narcotic Drugs CND conference! It was our first time to Vienna, which is a beautiful city with rich history, as well as delicious coffees and pastries!
Our first business meeting was with Sara Carter, the Director of the ONDCP (Office of National Control Policy), with Amy Ronshausen from the Drug-Free America Foundation and Shane Varco from the Delgarno Institute in Australia.… Read the rest
The impact of schizophrenia genetic load and heavy cannabis use on the risk of psychotic disorder in the EU-GEI case-control and UK Biobank studies
In the current study, released in the journal Psychological Medicine in December 2024, researchers mined the European Network of National Schizophrenia Networks Studying Gene-Environment Interactions (EU-GEI) study data, from 2018, as well as data from the UK Biobank to determine risk for psychosis caused by two factors.… Read the rest
Johnny Stack’s Six-Year Angelversary
Nearly six years ago, on November 20, 2019, my beloved 19-year-old son, Johnny, took his life. As many of you know, he had a psychotic episode from using high-potency THC concentrates. I can’t believe it’s been six years. So much has happened.… Read the rest
Rewired realities: novel insights into the neurobiology of cannabis use disorder and psychosis
CANNABIS USE DISORDER AND PSYCHOSIS: A DEVELOPING PROBLEM
Mounting epidemiological evidence indicates that the development of cannabis use disorder (CUD) may potentiate psychosis risk. Recent large-scale studies have shown a four-fold increase over the last two decades in the proportion of schizophrenia that can be attributable to CUD in Denmark (cited in [1, 2]) and a near tripling of CUD-associated psychosis cases in Ontario [2].… Read the rest
Johnny’s Ambassadors FREE eBooks
Johnny’s Ambassadors two books, The Dangerous Truth About Today’s Marijuana: Johnny Stack’s Life and Death Story, and The Impact of THC on Our Children: A Parent’s Worst Nightmare are FREE on eBook from Aug. 20-24, 2025.
Read the August 19, 2025 Johnny’s Ambassadors Newsletter
… Read the restParents of Children with Cannabis-Induced Psychosis (CIP) – Episode 18: His life revolved around THC
My son started using marijuana at the age of 15.
Before any judgment begins, yes, we always had conversations about drugs. My son grew up in a home without drugs, alcohol, or smoking.
In 2015, he left for college in Oklahoma, and unbeknownst to me, obtained a medical marijuana card online.… Read the rest
Impact on Mental Illness: The Role of Social Deprivation and Cannabis Use in Explaining Variation in the Incidence of Psychotic Disorders: Findings From the EU-GEI Study
In 2018, a group of European researchers observed, from a statistical analysis of the European Network of National Schizophrenia Networks Studying Gene-Environment Interactions (EU-GEI) study, that first-episode psychosis (FEP) varied widely among geographic regions in Europe. The original study appeared in the January 2018 issue ofJAMA Psychiatry.… Read the rest
Parents of Children with Cannabis-Induced Psychosis (CIP) – Episode 17: He was Unrecognizable
My 23-year-old son struggles with Cannabis-Induced Psychosis. He began smoking THC regularly at age 15. I thought cannabis was safer than alcohol so was not alarmed at first. Then, his school performance declined, and despite our pleas to stop, he became increasingly erratic and addicted.… Read the rest