The Marshall Project | By Alysia Santo This article originally published by The Marshall Project, a nonprofit news organization focused on the U.S. criminal justice system. You can sign up for their newsletter, or follow The Marshall Project on Facebook or Twitter. Kelsey Lindroth grew up in Suffolk County, Long Island, in the middle of a burgeoning heroin epidemic. She started with painkillers, and by 15, she had moved on to heroin. Now, at 24, Lindroth is sober, largely with the help of a new medication, Vivitrol, that blocks her opiate receptors. Even if she uses, she can’t get high.