05/27/2026
Can addiction be genetic? One of the biggest questions in addiction medicine is why some people can drink or use substances casually while others develop substance use disorder. Research continues to show that genetics and brain chemistry play a major role in addiction risk. Family history, inherited brain patterns, trauma, and psychological experiences all influence how a person responds to psychoactive substances. Addiction treatment is not as simple as prescribing a pill or expecting someone to “just stop.” Understanding the biological and psychological roots of addiction is essential for long term recovery and effective treatment.