(New York Times) – Researchers believe increasing use of cannabis may be contributing to a rise in new cases of schizophrenia and related disorders at younger ages.

A new analysis of birth cohorts in the Canadian province of Ontario has found a striking rise in the incidence of psychotic disorders among young people, a finding that its authors said could reflect teens’ increasing use of substances like cannabis, stimulants and hallucinogens.

The study, published on Monday in The Canadian Medical Association Journal, found that the rate of new diagnoses of psychotic disorders among people ages 14 to 20 increased by 60 percent between 1997 and 2023, while new diagnoses at older ages plateaued or declined. (Read More)