Is Addiction Hereditary? The Genetics of Drug and Alcohol Addiction
Twin and family studies have demonstrated strong familial inheritance patterns for SUDs (Prom-Wormley, Ebejer, Dick, & Bowers, 2017). Heritability (h2) estimates across SUDs vary, but broadly suggest that genetic influences account for approximately 50% of the risk. The best-known indicator of genetic risk is having a parent with a substance use disorder, but the transmission […]