Although needle exchanges and safe injection sites have numerous studies backing their effectiveness in fighting opioid addiction, a recent study revealed many Americans oppose both — a stigma that could harm the nation’s response to the opioid epidemic, Vox reports.

The study, published in Preventive Medicine, analyzed data from over 1,000 Americans. In a survey, the researchers queried respondents’ attitudes on needle exchanges, (where people can dispose of used syringes and get sterile ones), safe injection sites (where people can use drugs under medical supervision) and broader opinions on addiction.

Hinge Health, a San Francisco startup that developed a 12-week remote monitoring program to reduce chronic knee pain and back pain, has published the results of a randomized control study to illustrate the effectiveness of its program for chronic knee pain. The program is intended to provide a noninvasive alternative to surgery to reduce chronic musculoskeletal pain.