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Cannabis Haze: UK Faces Mental Health Crisis?
7 Apr
Summary
- Cannabis potency has significantly increased, raising psychosis risks.
- Private clinics prescribe high-THC cannabis, blurring recreational use.
- Legalisation in other countries correlates with rising psychosis cases.

The increasing prevalence of cannabis use across the UK is raising significant mental health concerns, with experts warning of a potential crisis. The potency of cannabis, particularly the skunk strain, has dramatically increased over decades, now containing up to 20% THC, compared to 2% in the 1960s. This rise in THC levels, coupled with a decrease in protective CBD, is strongly associated with a surge in cannabis-induced psychosis.
Psychiatrists report a significant increase in patients presenting with acute psychotic episodes, a severe mental health condition characterized by delusions and hallucinations. Research indicates that earlier and more frequent cannabis use heightens the risk of developing psychosis, with potential long-term or even lifelong effects. Studies suggest regular use can permanently alter brain structure, increasing the risk of psychotic and bipolar disorders, particularly in adolescents.