In the Grip of Heroin Part 5: Painkillers Often are "Gateway" to Heroin Addiction

Some remain addicted to the pills, and don't switch over to heroin. That's the case of a 26-year-old yoga teacher and grad student at UW-Milwaukee.

http://wuwm.com/post/grip-heroin-part-5-painkillers-often-are-gateway-heroin-addiction