500 obese patients donate samples to unlock secrets of weight loss and regain
Knowledge-focused
Ongoing
This observational study collects blood, urine, and tissue samples from 500 obese adults to learn more about obesity, weight loss, and why some people regain weight after treatment. Participants must be over 18 and have a BMI of 30 or higher. The samples will be stored for up to …
Sponsor: Pichamol Jirapinyo, MD, MPH • Aim: Knowledge-focused
Last updated May 15, 2026 12:07 UTC