Study: Adolescent Cannabis Use Not Independently Linked With IQ Decline

nvestigators concluded, "Short-term cannabis use in adolescence does not appear to cause IQ decline or impair executive functions, even when cannabis use reaches the level of dependence."

ARIZONA: The habitual use of cannabis by teens is not independently linked with adverse changes in intelligence quotient or executive functioning, according to longitudinal data published online ahead of print in the journal Addiction. A team of investigators from the United States and the United Kingdom evaluated whether marijuana use is directly associated with changes over time in neuropsychological Read the full article…

Twins Study Finds No Evidence That Marijuana Lowers IQ In Teens

“It's a classic chicken-egg scenario,” he says.

UNITED KINGDOM: Roughly half of Americans use marijuana at some point in their lives, and many start as teenagers. Although some studies suggest the drug could harm the maturing adolescent brain, the true risk is controversial. Now, in the first study of its kind, scientists have analyzed long-term marijuana use in teens, comparing IQ changes Read the full article…