Amsterdam study finds no cognitive decline from early cannabis use
A new study from Amsterdam suggests that starting to smoke marijuana at a young age does not lead to cognitive decline later in life. This challenges the long-held belief that cannabis negatively affects brain function. The research involved 5,162 men born between 1949 and 1961, comparing those with a history of marijuana use to non-users. Surprisingly, smokers showed slightly less mental decline than non-smokers, with an average difference of 1.3 IQ points. While the study focused only on men, it aligns with other research indicating no significant cognitive decline linked to cannabis use. Future studies may explore other factors influencing these results.