Adolescents who frequently use cannabis may experience a decline in IQ over time
March 3, 2021
Frequent or dependent cannabis use in adolescence is associated with an almost 2-point decline in IQ over time, according to new research published in Psychological Medicine.
“Cannabis use in general is growing in prevalence in western countries, generally concurrent with legalization. There is little high quality evidence that cannabis is either safe or has significant medicinal properties outside perhaps rare juvenile onset epilepsies,” said study author Emmet Power, a clinical research fellow in the Royal College of Surgeons in Ireland.
