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Researchers reported in the International Journal of Cardiology, "Marijuana use by older people, particularly those with some degree of coronary artery or cerebrovascular disease, poses greater risks due to the resulting increase in catecholamines, cardiac workload, and carboxyhemoglobin levels, and concurrent episodes of profound postural ...
Cannabis users have shown decreased reactivity to dopamine, suggesting a possible link to a dampening of the reward system of the brain and an increase in negative emotion and addiction severity. [11] Cannabis users can develop tolerance to the effects of THC. Tolerance to the behavioral and psychological effects of THC has been demonstrated in ...
An addictive drug is defined as a substance that affects the mesolimbic system directly or indirectly by increasing extracellular levels of dopamine. [ 24 ] Common addictive substances such as cocaine , alcohol , and nicotine have been shown to increase extracellular levels of dopamine within the mesolimbic pathway, preferentially within the ...
Cannabis use has increased significantly around the world. Past research shows that regular cannabis use can increase a person’s risk for several health concerns, including risk factors for ...
A growing body of research and numerous anecdotal reports link cannabis with several health benefits.
Research has found that heavy marijuana use during the teen and young adult years can increase the risk of triggering the start of schizophrenia and psychosis. There is also evidence that regular ...
A chemical in marijuana, THC, triggers brain cells to release the chemical dopamine. Dopamine creates good feelings — for a short time. Here's the thing: Once dopamine starts flowing, a user feels the urge to smoke marijuana again, and then again, and then again. Repeated use could lead to addiction, and addiction is a brain disease.
A marijuana high lasts only a few hours, but traces of tetrahydrocannabinol, or THC, remain in the body for much longer than that.