Why is addiction considered a brain disease, and what does that imply for treatment?

• A. Addiction involves lasting changes in brain circuits; treatment should address neurobiological and behavioral factors across the lifespan.
• B. Addiction is solely a moral failing; treatment focuses only on willpower.
• C. Addiction is caused only by social environment; pharmacotherapy has no role.
• D. Addiction is temporary and resolves without intervention.

Answer: (A)