Numerous medical associations classify addiction as a medical disease, specifically as a mental health and behavioral disorder that physically changes the brain.
- The American Society of Addiction Medicine defines addiction as “a primary, chronic disease of brain reward, motivation, memory, and related circuitry.”
- The American Medical Association (AMA) has long classified addiction as a disease.
- Addiction is included in the International Classification of Diseases (ICD) from the World Health Organization (WHO) as a type of mental and behavioral disorder.
- The American Psychiatric Association considers addiction a brain disease.
- The American Psychological Association defines it as “a chronic disorder with biological, psychological, social, and environmental factors influencing its development and maintenance.”