GASTROINTESTINAL DISEASES

This observational study is following up to 500,000 adults with chronic gastrointestinal diseases like Crohn's disease, ulcerative colitis, and eosinophilic GI disease. Researchers will collect data from electronic health records and patient reports to understand how these condit…

This study tests a new digital platform that helps doctors and nurses share important patient information when a person is moved from one hospital to another. About 1,000 adults being transferred to a major hospital will take part. The goal is to see if better information sharing…

This study watches 200 people with lung, gut, or hormone diseases over time using special brain scans (PET). It aims to see how these diseases change brain activity and whether those changes can predict tumor return, spread, or survival. No new treatment is tested—just observatio…

This study follows 5,000 Canadian beachgoers to see how different levels of water contact—from wading to swallowing water—affect their risk of getting sick. Researchers will track stomach bugs, respiratory infections, and skin or ear problems in the week after a beach visit. The …

This study follows 2,500 people who visit freshwater beaches in Ontario, Manitoba, and Nova Scotia to see if contact with water containing blue-green algae (cyanobacteria) leads to stomach bugs, respiratory issues, or skin/eye infections. Researchers will also track illness in pe…