Psychiatrists Oppose Cannabis for Mental Disorders as THC Potency Quadruples in 25 Years
Updated
Updated · Slate · Jun 13
Psychiatrists Oppose Cannabis for Mental Disorders as THC Potency Quadruples in 25 Years
3 articles · Updated · Slate · Jun 13
Summary
The American Psychiatric Association said cannabis should not be used as medicine for psychiatric disorders, arguing evidence does not support it for anxiety or depression and linking use to the onset or worsening of mental illness.
Doctors cited rising harms from regular, high-potency use, including cannabis withdrawal, addiction and cannabinoid hyperemesis syndrome, a severe vomiting condition whose only lasting cure is stopping cannabis.
A 2015 national survey found nearly 31% of adults who used cannabis in the past year met criteria for cannabis use disorder, while one recent study linked hospital care for that disorder to nearly triple the risk of death within five years.
The warning comes as cannabis strength has climbed sharply—the average THC content of cannabis plants has quadrupled over the past 25 years, with vape and edible products often even more concentrated.
With THC potency soaring, has the casual acceptance of cannabis created a hidden addiction crisis for a generation?
As millions suffer from cannabis-induced psychosis, why is medicine struggling to find an effective treatment?
The High-Potency Cannabis Crisis: Rising THC Levels, Psychiatric Risks, and Public Health Imperatives (2026)
Overview
The report highlights a dramatic and sustained increase in the potency of THC, the main psychoactive compound in cannabis, leading to a significant transformation in cannabis products. This shift has fundamentally altered the risk profile of cannabis compared to previous decades, creating new public health and safety concerns. Today’s cannabis is much stronger than in the past, with 90% of products marketed as 'medical' containing THC levels above 15%, which is two to three times higher than what is typically needed for pain relief. These changes underscore the urgent need to reconsider potency limits and address the growing challenges posed by high-potency cannabis.