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Some studies say the negative effects on the brain may ease after weed is discontinued, but that may also depend on the amount, frequency and years of marijuana use. The age in which weed use ...
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. [86]
A study of more than 6 million Danes published in JAMA Psychiatry in May found that people who have cannabis use disorder (meaning, they’re unable to stop using marijuana) had a higher risk of ...
An April 2023 study published in Cureus documented an increase in emergency room visits for psychiatric effects of cannabis after Michigan legalized the drug in 2018. Nearly 20% of emergency room ...
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 ...
The earliest systematic studies of physiological effects of cannabis-derived chemical were conducted in the 1920's (see Fig. The number of publications about marijuana/cannabis). The level or research activity in this area remained relatively low and constant until 1966, when a 10-fold increase in publication activity occurred within 10 years.
In areas where marijuana becomes legal and easier to access, Volkow’s concern is the ease with which products can be mixed, leading to a high total dose of marijuana consumed.
The book's chapters thus address issues of marijuana's real or putative effects on sex hormones and reproduction, lungs, the immune system, the brain, memory, cognition and motivation; the gateway theory and addiction; crime, deviance and punishment, and so on -- in other words, virtually all the concerns that have been raised for decades in ...