Health and Fitness Twin Study: Marijuana Use Does Not Effect IQ Decline by Press on January 22, 2016 Press Author More in Health and Fitness: MakeMyTestCount.org: NIH Establishes Website For Self-Reporting COVID-19 Test Results November 22, 2022 Extended Medicaid Coverage for Postpartum Care in Year-End Funding Bill: Rep. Robin Kelly Leads the Call September 22, 2022 Rep. Kelly’s Bipartisan Reese’s Law Passes the Senate, Heads to President Biden’s Desk for Signing August 4, 2022 Los Angeles, CA--(ENEWSPF)--January 22, 2016. The cumulative use of cannabis by adolescents has no direct effect on intelligence decline, according to longitudinal data published in the Proceedings of the . . . You've reached subscriber-only content Register for free to continue reading Free 3-day trial Already a subscriber? Log in here.