Teens and young adults who start using cannabis may have an increased risk of having psychotic experiences in the years following, a German study found.
Among young people who had never smoked pot and did not have any psychotic symptoms, those who started using the drug were nearly twice as likely to develop subclinical symptoms of psychosis, Dr. Jim van Os of Maastricht University Medical Center in the Netherlands and colleagues reported online in BMJ.
In a separate analysis, those who used cannabis consistently were more likely to report persistent psychotic experiences at more than one follow-up visit.
While there's some truth to this...after all, numbers don't lie...there are other studies that indicate that any psychoactive drug can cause psychotic breaks, including alcohol and even caffeine and tobacco.