Author: editor

What Is Addiction?

What Is Addiction? Today, scientists view addiction as a psychological or physical vulnerability to a substance, which includes behavior. Historically, the term was applied only when the habitual use of …

PSYCHOACTIVE DRUGS

PSYCHOACTIVE DRUGS Psychoactive drugs include legal compounds such as caffeine, tobacco, and alcohol, as well as illegal substances such as heroin, cocaine, and LSD (Figure 13.1). This section examines general …

HIV Infection and AIDS

HIV Infection and AIDS The human immunodeficiency virus (HIV) causes acquired immunodeficiency syndrome (AIDS), a disease that without treatment ultimately kills most of its victims. On average, with the best …