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The research team, headed by Igor Grant, found that cannabis use affects perception but does not cause permanent brain damage. Researchers looked at data from 15 previously published controlled studies involving 704 long-term cannabis users and 484 nonusers. The results showed long-term cannabis use was only marginally harmful on memory and ...
Over time, the marijuana gateway hypothesis has been studied more and more. In one published study, the use of marijuana was shown not a reliable gateway cause of illicit drug use. [67] However, social factors and environment influence drug use and abuse, making the gateway effects of cannabis different for those in differing social circumstances.
Developing cannabis use disorder is also a possibility when using marijuana, Kelm says. “Addiction, or cannabis use disorder, develops in about 10% of users,” he says.
Using marijuana as little as once per month is associated with a higher risk of heart attack ... the psychoactive ingredient in marijuana, can cause an increase in inflammation in the blood ...
The National Institute on Drug Abuse determined that marijuana use is "likely to precede use of other licit and illicit substances" and that "adults who reported marijuana use during the first wave of the survey were more likely than adults who did not use marijuana to develop an alcohol use disorder within 3 years; people who used marijuana ...
Early findings from a large Danish study last year found that using medical marijuana for chronic pain was associated with a 64% increase in the risk of abnormal heart rhythms such as atrial ...
Adults who are addicted to marijuana are at a 60% higher risk of having their first heart attack, stroke, or another major cardiovascular event compared with people without cannabis use disorder.
[3] While stating that their "findings are consistent with the idea of marijuana as a "gateway drug"", [3] they conceded that "the majority of people who use marijuana do not go on to use other, "harder" substances", [3] and that "cross-sensitization is not unique to marijuana. Alcohol and nicotine also prime the brain for a heightened response ...