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Cannabis may trigger depression !

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Cannabis may trigger depression, increase risk of schizophrenia



Researchers have found that frequent use of cannabis can trigger depression and increase the risk of schizophrenia. The findings highlight the need for measures to reduce frequent and heavy use of cannabis.


The first paper, by doctors in Australia, found frequent cannabis use among teenage girls in particular can trigger depression. The study of 1,600 teenage girls found that girls who used the drug everyday were five times more likely to become depressed and suffer from anxiety compared to those who did not use the drug.


Those who used the drug at least once every week were twice as likely to develop depression compared to non-users.


A second study by doctors in Sweden confirmed previous research suggesting that cannabis can increase the risk of developing depression. Their study of more than 50,000 men found those who had smoked the drug in the late 1960s were 30 per cent more likely to have developed schizophrenia.


The authors said their results suggested that as many as one in eight cases of schizophrenia in the UK could be prevented by stopping people from using cannabis. The third study, by British scientists, suggests the risks of developing schizophrenia are highest for those people who use the drug when they are teenagers.


All the researchers said that the ill-effects were linked to cannabis and not to any other drugs. They also said there was little evidence to suggest that occasional use of cannabis had a similar effect.

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