A 20-year study suggests that regular cannabis usage can cause mental health problems. Regular marijuana users are believed to experience psychotic symptoms twice more than non-users.
Smoking marijuana is dangerous. Cannabis may cause mental health problems: 20-year study
Tech Times - 9 Oct 2014 13:13
A 20-year study suggests that regular cannabis usage can cause mental health problems. Regular marijuana users are believed to experience psychotic symptoms twice more than non-users.
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