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Review ties teen cannabis use to depression risk later in life

Youths who used cannabis before age 18 were nearly 40% more likely to develop depression, 50% more likely to have suicidal thoughts and more than three times as likely to attempt suicide in young adulthood compared with those who didn't use cannabis, according to a systematic review in JAMA Psychiatry. No significant association was found between cannabis use in adolescence and later risk of anxiety.

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