Trustees Of Dartmouth College

This study tests whether a table-top water pitcher filter can reduce arsenic levels in drinking water for people with private wells in New Hampshire. Twenty adults with elevated arsenic in their well water will use the pitcher for 12 weeks. Researchers will measure arsenic in wat…

This study tests different methods to stop the spread of dangerous bacteria in operating rooms and reduce infections after surgery. About 6,000 people having hip, knee, or spine surgery will take part. The goal is to find the best way to keep patients safe from infections.

This early-phase trial is testing whether a generative AI chatbot called Therabot-CALM is usable and acceptable for people who have cannabis use disorder along with anxiety or depression. Fifteen participants will use the app for 4 weeks and give feedback through interviews and q…

This study uses brain scans to explore how a placebo cream (a fake pain-relief cream) changes the way people feel pain on different parts of their body. About 150 healthy adults will receive either a placebo cream or a control cream before mild heat pain is applied to their skin.…

This study looks at how cannabis ads that claim to help with anxiety or depression affect what people buy. About 2,000 light-to-moderate cannabis users with mild to severe anxiety or depression will shop in a simulated online store. Some see ads with mental health claims, others …

This study tests whether a gentle, non-invasive brain stimulation technique called tTIS can reduce negative emotions like fear and pain. It also looks at how a caregiver's positive or negative words might boost or weaken that effect. About 196 healthy adults will take part, inclu…

This study looks at how having control over a virtual environment changes how people feel pain and anxiety. Twenty healthy adults will experience mild pain and anxiety in different virtual settings—some they can control, some they cannot. The goal is to understand how the brain a…