Brown University Apr 2 2026 A new study led by researchers at Brown University School of Public Health found that more than half of U.S. jails are located at least a 30-minute drive from the nearest opioid treatment program - a distance that may make it harder for incarcerated people to receive methadone, a key medication for opioid addiction. The research letter, published in JAMA Network Open, analyzed 3,228 nonfederal jails and 2,096 federally licensed opioid treatment programs, or OTPs. The