By Brandon Specktor
Which came first, the burnout or the weed?
Though various studies have linked teenage cannabis use to noticeable cognitive decline in adulthood, a recent paper published in the journal NeuroImage casts doubt on the existence of this straightforward cause-and-effect relationship.
Among a sample of 28-year-olds who took a working-memory test while undergoing an MRI brain scan, individuals who started smoking marijuana in adolescence performed just as well or even better than individuals who never smoked cannabis, the study found. What’s more, the brain regions that worked more slowly in the cannabis-smoking set compared to the nonsmokers were inconsistent from person to person, suggesting that other factors besides marijuana could account for the cognitive difference.
Read more at Live Science