By Mayo Clinic
Drug addiction, also called substance use disorder, is a disease that affects a person's brain and behavior and leads to an inability to control the use of a legal or illegal drug or medication.
Read on www.mayoclinic.org
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“What had happened to my beautiful boy? To our family? What did I do wrong?” Those are the wrenching questions that haunted every moment of David Sheff’s journey through his son Nic’s addiction to drugs and tentative steps toward recovery.