Feasibility of a Wireless Thermal Capsule Endoscopy to Detect Gastrointestinal Thermal Variance

This study tests a new wireless capsule you swallow that measures temperature changes inside your digestive tract — to see if temperature readings can help detect bowel health issues. **You may be eligible if...** - You are between 18 and 75 years old - You are generally healthy with no known illnesses - You are able to fast before the test - You can follow bowel preparation instructions - You can provide informed consent **You may NOT be eligible if...** - You are older than 75 - You have trouble swallowing - You have a bowel condition that could cause the capsule to get stuck (like Crohn's disease, bowel strictures, or prior bowel surgery) - You have a pacemaker or similar implanted device Talk to your doctor to see if this trial is right for you.