A landmark UK study has revealed that people who turn to cannabis for self-medication—rather than recreational use—are more likely to experience paranoia and long-term heavy use. A landmark UK study has revealed that people who use cannabis for self-medication, rather than recreational purposes, are more likely to experience paranoia and long-term heavy usage. Cannabis and me The survey, which lasted three years, involved 3,389 people and is the most comprehensive investigation to date into cannabis’ impact on mental wellbeing.
The findings are examined in more detail
Researchers from the University of Bath in conjunction with King’s College London found that people who used cannabis for anxiety, pain, and depression scored higher than others on assessments of paranoia. They also consumed greater amounts—averaging 10 to 17 joints per week, equating to around 206 units of THC, cannabis’s main psychoactive compound.
Participants who began using marijuana socially, or as a recreational activity for fun, tended to use less cannabis and face fewer risks in the long term. Tom Freeman, senior author of the study, said that those who self-medicate are more likely to develop “a chronic long-term pattern of usage,” which could lead them into a vicious cycle of addiction.
Trauma as a compounding factor
Second report from this study focused on childhood trauma. Over half of respondents reported some form of traumatic experience in their youth—a factor linked with higher paranoia scores and heavier cannabis use later in life. Researchers believe trauma can increase cannabis use and negative mental outcomes.
Health policy: What it all means
This study comes at an important time for cannabis regulations. The study shows that, while medical cannabis use is increasing globally, caution should be exercised: using cannabis “medicine” in the absence of clinical oversight could increase unintentionally risks. The study’s findings are cited by advocates as evidence that cannabis policy should be reformed to include more harm reduction, education and mental health resources.
Research also questions some popular narratives. The study shows that recreational users are often stigmatized, yet those who begin with the intention of “fun” may be more resistant to damaging patterns than people seeking pain relief or psychological stressors.
👉 Think about Readers How should health care professionals and policymakers balance the need for medical cannabis with mental health protection? Please share your comments.