Pot Use in Youth Ups Risk of Psychotic Symptoms in Later Life
The new findings are based on data on about 2,000 individuals in Germany who were 14 to 24 years old when they enrolled in the study, and who were then followed for 10 years.
None of the participants had ever tried marijuana before entering the study, nor had any experienced psychotic symptoms.
The researchers found that those who started smoking pot during the 10 years of the trial had double the risk of developing psychotic symptoms such as hallucinations, even after adjusting for factors such as age, sex, socioeconomic status, other drug use and other psychiatric diagnoses.
And the more persistent the use, the more persistent the symptoms.
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