Heroin overdoses more than quadrupled between 2010 and 2015

The number of deadly heroin overdoses in the United States more than quadrupled from 2010 to 2015, a federal agency said on Friday, as the price of the drug dropped and its potency increased. There were 12,989 overdose deaths involving heroin in 2015, according to the National Center for Health Statistics, compared with 3,036 such fatalities five years earlier.