6/2/2023 0 Comments Using the term![]() 5 (Hereafter, unless otherwise specified, drugs refers to all of these substances.) How are substance use disorders categorized? 3,4 Tobacco is linked to an estimated 480,000 deaths per year. 1,2 In 2016, drug overdoses killed over 63,000 people in America, while 88,000 died from excessive alcohol use. Use of and addiction to alcohol, nicotine, and illicit drugs cost the Nation more than $740 billion a year related to healthcare, crime, and lost productivity. Addiction is the most severe form of a full spectrum of substance use disorders, and is a medical illness caused by repeated misuse of a substance or substances. It is considered both a complex brain disorder and a mental illness. Addiction is defined as a chronic, relapsing disorder characterized by compulsive drug seeking, continued use despite harmful consequences, and long-lasting changes in the brain.
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