Addiction.

The article offers information on addiction, which refers to a complex brain disease that affects the entire body and a person's ability to function normally. Topics discussed include substances to which a person can become addicted including alcohol, cocaine, and drugs like morphine and heroin, finding of a 2018 National Institute on Drug Abuse (NIDA) study that social interactions greatly affect addiction-related behaviors, and impact of addiction on individuals, families, and society.