Researchers Continue to Link High-Potency Marijuana with Psychosis

Researchers continue to link high-potency marijuana with mental health problems.
A recent study published in the American College of Physicians’ journal found marijuana that is high in THC is associated with “anxiety, depression, psychosis or schizophrenia, and cannabis use disorder (CUD).”
Researchers examined 99 studies, evaluating the impact marijuana had on users.
It’s important to point out that most marijuana today arguably qualifies as “high-potency.”
THC levels have risen dramatically both in the marijuana itself and in products like gummies, candies, edibles, and extracts made from marijuana.
A separate study published earlier this year in Colorado found marijuana flower products contained 21% THC, on average, and marijuana concentrates averaged 71% THC. For perspective, CU Boulder Today notes, “In the 1980s, the typical THC content in marijuana was around 8%.”
A growing body of scientific evidence reveals that marijuana is harmful — especially for teens and young adults.
Nationwide, since 2019, the number of kids diagnosed with cannabis-induced mental disorders, including schizophrenia and psychotic episodes, has increased dramatically. Other researchers have found marijuana use fuels self-harm among young men.
More generally, marijuana has been tied to a number of deadly heart problems — including heart attack, heart failure, and stroke. Researchers now say marijuana use doubles a person’s risk of death from heart disease.
And marijuana use during pregnancy has been shown time and time again to hurt unborn children and newborns.
Marijuana industry insiders worked unsuccessfully to expand marijuana in Arkansas via the state’s ballot initiative process in 2022 and 2024. Fortunately, neither of those measures passed.
All of this underscores what we have said for years: Marijuana may be many things, but “harmless” simply is not one of them.
Articles appearing on this website are written with the aid of Family Council’s researchers and writers.