Purdue University

This study tests a wearable device that gives feedback on swallowing muscle activity to help people with swallowing problems from stroke or Parkinson's disease. About 120 adults aged 50-90 will do a 12-week therapy program either in-person or at home via telehealth. The goal is t…

This study looks at how different noise-reduction features in hearing aids affect a person's ability to hear and remember speech in noisy environments. About 50 adults with mild-to-moderate hearing loss will listen to sentences at various background noise levels and try different…

This study looks at how slowly digestible carbohydrates (like raw corn starch) affect a hormone called GLP-1, which helps control appetite. Healthy adults aged 18-45 will drink different amounts of starch and have their blood tested over several hours. The goal is to find the bes…

This study looks at how changing the amount of cysteine (a building block of protein) in the diet affects gut bacteria and inflammation in Black and White adults aged 45-75 who have had colon polyps. Participants will eat both high-cysteine and low-cysteine diets for three weeks …

This study looks at how healthy adults' gut bacteria change when they take a fiber supplement called chicory inulin. Researchers want to see how quickly and how long the bacteria change, and if it affects mood, appetite, and bowel habits. About 52 people will take either inulin o…