US heroin use has increased almost fivefold in a decade, study shows | The Guardian
▻https://www.theguardian.com/society/2017/mar/29/us-heroin-use-has-increased-almost-fivefold-in-a-decade-study-shows
Researchers say increase is seen across all social groups, ages and sexes and highlight link between misuse of prescription opioids and heroin abuse