Amsterdam study finds youth cannabis use doesn't impair cognition

A new study from Amsterdam suggests that smoking weed in youth does not lead to cognitive decline in later life. Researchers surveyed over 5,000 men born between 1949 and 1961, finding no significant differences in cognitive abilities between smokers and non-smokers. The study indicated that regular cannabis users had an average IQ 1.3 points lower than non-users, but this difference is considered minor. Previous studies from Australia and the U.S. support these findings, showing little impact of early cannabis use on brain function. Researchers noted limitations, including the study's focus on men only. Despite this, the results challenge the common belief that young cannabis users will experience significant mental decline as they age.