Drug dependence
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                    Researchers have identified specific regions of the human genome connected to cannabis use, which means the propensity to get addicted to weed may be encoded in our DNA.
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                    New research has found that an existing ADHD medication greatly reduced the number of days people with a methamphetamine dependence used the drug. With no current drug treatment to assist people in getting off meth, the study’s findings are promising.
 
