Plain-English translation of NCT06538948 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Read our Obesity research guide →Researchers want to understand exactly how weight loss surgery changes the way people eat and drink. This study will watch and measure eating and drinking patterns in detail—not just how much food people consume, but how they consume it. The research will compare people having two types of weight loss surgery (gastric bypass and sleeve gastrectomy) with people who have obesity but aren't having surgery, and with people of normal weight.
Weight loss surgery is known to help people eat less and lose weight, but doctors don't fully understand how and why this happens. Past studies have been unclear about the role sex differences and certain gut hormones play in changing eating behavior. By directly measuring how people eat after surgery, researchers hope to discover the real mechanisms that make the treatment work.
You likely qualify if…
You likely don't qualify if…
If you join this study, you will visit the research center to have your eating and drinking patterns measured using special equipment (called a drinkometer). Blood samples may be taken to measure gut hormones. If you're having weight loss surgery, you'll be tested before your procedure and then again afterward to see how your eating behavior has changed. Some participants will also be followed for five years after their surgery to see how changes in eating patterns relate to long-term weight loss.
AI-generated summary from trial data · Jul 13, 2026 · Not medical advice
Switzerland