There Might Be A Genetic Reason People Become Addicted To Marijuana

A new study identified specific genes that may make someone more likely to become dependent on marijuana.

Researchers at Yale University examined the genes of nearly 15,000 people to try to determine the relationship between genetics and addiction.

Between 18 percent and 36 percent of participants exhibited a dependency on marijuana, according to TIME. Previous research estimated 10 percent of marijuana users become addicted, but a high amount of marijuana addicts were used for this study to increase the chances of discovering associated genes.

The team found three genetic variations linked to symptoms of marijuana addiction. One of these genetic variants is involved in the regulation of calcium, which plays a role in the formation of addictions to other substances such as opioids, Yahoo! News reports. Genes that regulate calcium are also reportedly linked to the risk of developing schizophrenia, depression, autism and attention-deficit/hyperactivity disorder (ADHD).

Another genetic variant was located in the...

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