2014-02-19-Screenshot20140219at3.38.14PMHeroin use is on the rise in the United States. The number of Americans using the drug has increased by about 50 percent in the past decade, according to a 2013 report by the U.S. Substance Abuse and Mental Health Services Administration Heroin users seldom start out seeking the drug. Data shows that 80 percent of heroin users started with prescription painkillers. These charts show just how big the problem has become. Overall drug overdose death rates have increased roughly fivefold since 1990, according to the Centers for Disease Control and Prevention. Drug overdose deaths were second only to car crash deaths among unintentional injury deaths in 2007. More