Changing Demographics of Heroin Use (IMAGE) Washington University School of Medicine Caption Washington University researchers have found that as prescription painkillers have gotten more expensive and difficult to abuse, many suburban drug users have switched to heroin. Credit Wikimedia commons Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.