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How Smoking CANNABIS for a Month Affects Your Lungs
See alsoCannabis Impact on Your LungsbyBritish Lung Foundation
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J Clin Psychiatry 2018;79(6):17m11977m 10.4088/JCP.17m11977 © Copyright 2018 Physicians Postgraduate Press, Inc.
Objective: Associations between adolescent cannabis use and poor neurocognitive functioning have been reported from cross-sectional studies that cannot determine causality. Prospective designs can assess whether extended cannabis abstinence has a beneficial effect on cognition.
Conclusions: This study suggests that cannabis abstinence is associated with improvements in verbal learning that appear to occur largely in the first week following last use. Future studies are needed to determine whether the improvement in cognition with abstinence is associated with improvement in academic and other functional outcomes.
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October 2018
Marijuana use causes more long-term damage to teen brains than alcohol use, according to a new study entitled “A Population-Based Analysis of the Relationship Between Substance Use and Adolescent Cognitive Development.”
The study – completed by researchers at the University of Montreal – followed 3,800 Montreal teens over the course of four years. As part of the study, teen participants were questioned about their marijuana and alcohol use, and took computer-based cognitive tests.
They found that marijuana had more of an effect on the teens’ skills, memory and behavior than alcohol… Even after students reported stopping marijuana, their cognition did not improve.
“Cannabis causes cognitive impairment and delayed cognitive development in adolescents," Patricia Conrad, the lead author and professor of psychiatry at the University of Montreal, told NBC News. “This study focuses on the neuropsychological effects of cannabis. We think it’s important because it is linked to how someone functions in life.”
The findings were published in the American Journal of Psychiatry.
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Marijuana can be incredibly easy for kids to sneak into school, but now some school districts across the country are using a new gadget to spot it in just seconds. TODAY national investigative correspondent Jeff Rossen heads to Colorado, where marijuana is legal, to show viewers how the new “test kit” works.