Sir.–Cannabis cannot be considered as a “safe drug”. In addition to being illegal, there is clear evidence that cannabis use is associated with significantly increased risks of long-term psychological, psychiatric and physical harm.
Studies demonstrate that long-term cannabis use can increase the risk of depression and double the risk of experiencing a psychotic episode or developing long-term schizophrenia.
Among young people, regular cannabis use can lead to a four-fold increase in the risk of developing a psychotic disorder.
The Royal College of Psychiatry reports that these risks are likely to be further heightened with the use of skunk and other stronger varieties or where there is a family history of mental illness.
Direct long-term physical risks are similar to those associated with tobacco use. In addition, the FRANK website notes the following risks:
- An increase in the heart rate and blood pressure, which can be especially harmful for those with heart disease.
- Reduced sperm count in men and suppression of ovulation in women.
- Reduced birth weight if used when pregnant.
Indirect physical harm arises from the increased risk of accident as a result of impaired concentration and cognitive functioning. A recent French study found that cannabis users were more than twice as likely to be the cause of a fatal crash than to be one of the victims.
Anyone concerned about their cannabis use should contact their specialist drug treatment service: HOMER Drug & Alcohol Recovery Service 023 9268337 (24/7) solent.nhs.uk/ substancemisuse.
Catch 22 0800 5999591 (24/7) catch-22.org.uk.
Support and advice for anyone concerned about a family member’s use of cannabis:
Parent Support Line 023 8039 9764 (24/7) parentsupportlink.org.uk.
Information about the supply or availability of cannabis can be left anonymously by calling Crimestoppers on 0800 555 111 – Councillor Liz Fairhurst, executive member for health and wellbeing, Hampshire County Council, The Castle, Winchester.
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