This study shows that adolescents exposed to marijuana have a decrease in overall intelligence, perceptual reasoning, processing speed and verbal comprehension. It also shows that the more adolescents were exposed to the drug, the more deficits they experienced. New Zealand research.
DOT’s Notice on Testing for Marijuana
December 18, 2025 the President of the United States issued an Executive Order directing the Department of Justice to complete the rescheduling process of marijuana