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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 dried cannabis flower. The short-term effects of cannabis are caused by many chemical compounds in the cannabis plant, including 113 [clarification needed] different cannabinoids, such as tetrahydrocannabinol, and 120 terpenes, [1] which allow its drug to have various psychological and physiological effects on the human body.
It occurs when exposure to a substance – specifically, a neurotoxin or neurotoxicant– alters the normal activity of the nervous system in such a way as to cause permanent or reversible damage to nervous tissue. [1] This can eventually disrupt or even kill neurons, which are cells that transmit and process signals in the brain and other ...
In addition, researchers say there are many other potential ways marijuana might affect health that they want to understand better. SEE MORE: Marijuana use linked to schizophrenia, no cancer threat
Researchers in Italy and the U.K. have found high-potency marijuana can affect the corpus callosum, the nerves that connect the halves of the brain. 'Skunk' marijuana may hinder brain's ability to ...
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.
A new study found evidence that marijuana could potentially be used to fight skin cancer, slowing the disease’s growth and killing cancerous cells before they have a chance to spread. But the ...
While the most likely cellular targets and executors of the CB 2 receptor-mediated effects of endocannabinoids or synthetic agonists are the immune and immune-derived cells (e.g. leukocytes, various populations of T and B lymphocytes, monocytes/macrophages, dendritic cells, mast cells, microglia in the brain, Kupffer cells in the liver ...