N&PD Moderators: Skorpio Forums Media, Science and Research Neuroscience and Pharmacology Discussion Long-term cannabis users showed IQ decline from childhood to midlife (mean −5.5 IQ points) JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. Members who reacted to message #20 All (2) Like (2) Apr 30, 2022 Fourofakind Bluelighter · From Northwest of Mexico Messages 66 Reaction score 50 Points 30 Apr 26, 2022 Xorkoth Bluelight Crew · From In the mountains Messages 65,025 Reaction score 43,135 Points 180 Loading… Forums Media, Science and Research Neuroscience and Pharmacology Discussion Long-term cannabis users showed IQ decline from childhood to midlife (mean −5.5 IQ points)