The largest concentration of crack users in the U.S. are African-American males between the ages of 18 and 30 who come from low socioeconomic backgrounds.
Most anabolic steroids found in the U.S. are smuggled in from other countries and then illegally diverted from pharmacies in the United States, or further synthesized in clandestine laboratories.
Males are more prone to abuse of benzodiazepines such as Valium than females.
Studies show that becoming divorced leads to increased drinking among those that consume alcohol.