Deaths caused by heroin overdoses in the United States quadrupled between 2010 and 2015, according to a new report.
The National Center for Health Statistics says there were 12,989 overdose deaths involving heroin in 2015. In 2010, the number was 3,036. In percentages, heroin caused 8 percent of drug overdose deaths in 2010, and now it accounts for 25 percent.
The center cites dropping prices and increasing potency for the rise in deaths.