A new study published in the journal Psychological Medicine estimates that teens using cannabis are at 11 times higher risk of developing a psychotic disorder compared to teens not using cannabis.
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Fact Check: A Photo Appears to Show Wild Cannabis Growing Naturally in the Himalayas. Here's What We Know About It yahoo.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yahoo.com Daily Mail and Mail on Sunday newspapers.