Lifetime cannabis use is not associated with cognitive decline, according to longitudinal data published in the journal Brain and Behavior. Danish investigators assessed the relationship between cannabis use and age-related cognitive decline in a cohort of 5,162 men. Subjects’ IQs were assessed during early adulthood (mean age: 22) and then again in late midlife (mean age: 62). Researchers determined that participants with a history of cannabis use experienced “significantly less cognitive decline” over their lifetimes…
