FASTING

This study looks at how much clear liquid (like water or juice) teens aged 13 to 17 can safely drink before an upper GI endoscopy. Researchers will measure the amount and acidity of stomach contents after different drink volumes. The goal is to create better fasting guidelines fo…

This study looks at how a 36-hour water-only fast changes the immune system in healthy adults. Four men aged 20-40 will have their blood tested before, during, and after fasting. Researchers will check for changes in immune cells and gene activity. It is a small, early-stage stud…

This study is testing whether eating solid food before a minor hand surgery (called WALANT) helps reduce anxiety and nausea compared to fasting. About 134 participants will be randomly assigned to eat or fast before their procedure. Researchers will measure anxiety, heart rate, b…

This study looks at whether stopping tube feeding for at least 8 hours before a procedure helps or harms recovery in critically ill patients on breathing machines. About 1,072 adults in the ICU will be randomly assigned to either fast or continue feeding until right before their …

This study looks at whether patients with severe breathing problems in the ICU should be allowed to eat or drink before they need a breathing tube. Currently, patients are often kept fasting to prevent food from entering the lungs, but this can cause discomfort and malnutrition. …

This study looks at what happens to your immune cells when you fast for 24 hours. Researchers want to understand how the body's switch from using sugar to burning fat for energy changes the way immune cells work. The study involves 28 healthy adults aged 18-40. No treatment or dr…

This study looks at whether ultrasound can reliably measure how much is in a child's stomach before surgery, which could help prevent rare but serious complications like breathing in stomach contents. About 60 children aged 2 to 18 will have stomach ultrasounds, and some will als…

This study looks at what happens in your blood when you fast for a long time. Researchers want to see if these changes can make breast cancer cells more sensitive to chemotherapy in lab tests. The study involves 15 healthy adults who will fast under supervision.