Overview

• An analysis in BMJ Mental Health of 3,389 adults without clinical psychosis found higher paranoia scores among those who began cannabis use for pain, anxiety, depression or minor psychotic symptoms.
• Participants consumed an average of 206 standard THC units per week (about 10–17 joints), rising to 248, 254.7 and 286.9 units for those citing anxiety, depression or family use.
• A linked Psychological Medicine study reported that 52% had childhood trauma, with physical or emotional abuse tied to roughly 35–40% higher paranoia and trauma types associated with heavier THC intake.
• Researchers and clinicians say the stated reason for first use could serve as a low-cost triage tool to identify people needing monitoring, support or referral to treatment.
• In England, NHS prescriptions for cannabis remain tightly restricted, while private clinics provide access for broader complaints including chronic pain and mental health problems.