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Heavy marijuana use in adolescence has also been associated with deficits in cognition. A recent study assessing changes in neuropsychological functioning resulting from long-term cannabis use followed a group of adolescents (ages 12 –15 at baseline) over a 14-year period.
The observed effects on memory and learning, they said, showed long-term cannabis use caused "selective memory defects", but "of a very small magnitude". [85] A study by Johns Hopkins University School of Medicine found that heavy cannabis use is associated with decrements in neurocognitive performance even after 28 days of abstinence.
A scientific review published in JAMA Psychiatry in 2016 found that people who use marijuana are more likely to develop temporary psychosis, as well as long-lasting mental disorders like ...
Legal cannabis (marijuana) product. Overconsumption and reliance could lead to cannabis-induced amotivational syndrome. The term amotivational syndrome was first devised to understand and explain the diminished drive and desire to work or compete among the population of youth who are frequent consumers of cannabis and has since been researched through various methodological studies with this ...
D’Souza added that cannabis use can have serious impacts on the developing brain because of its effects on the endocannabinoid system, a complex signaling system in the brain that marijuana targets.
Despite these shifts in reported use and policy, experts remain largely in the dark about the effects of occasional marijuana use, a result of contested federal restrictions on research. A larger ...
Marijuana's official designation as a Schedule 1 drug — something with "no accepted medical use" — means it is pretty tough to study.. Yet both a growing body of research and numerous ...
A 2012 review of cannabis use and dependency in the United States by Danovitch et al said that "42% of persons over age 12 have used cannabis at least once in their lifetime, 11.5% have used within the past year, and 1.8% have met diagnostic criteria for cannabis abuse or dependence within the past year. Among individuals who have ever used ...