Plain-English translation of NCT06853652 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This research study is trying to figure out exactly how much protein men need to eat after having gastric bypass surgery. Researchers will measure how your body uses protein at different intake levels to find the right amount for people who have had this weight-loss surgery. The study uses a special test called the Indicator Amino Acid Oxidation method, which measures how your body breaks down amino acids (the building blocks of protein) when you eat different amounts.
After gastric bypass surgery, people's bodies change in how they absorb and use nutrients, including protein. Right now, doctors don't have clear guidelines about exactly how much protein people need after this surgery to stay healthy. This study will help create better nutrition recommendations for gastric bypass patients.
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You would come for one initial visit to be screened and plan your participation. Then you would attend between 2 and 7 additional study visits (you don't have to do all of them). On each visit day, you would eat a meal with a specific amount of protein, and researchers would measure how your body uses that protein through breathing tests and other measurements. Most visits require a couple of adaptation days beforehand so your body adjusts to the protein level being tested.
AI-generated summary from trial data · Jun 28, 2026 · Not medical advice
Belgium
Sponsor
Universitaire Ziekenhuizen KU Leuven
Enrollment target
~20 participants
Started
March 2025
Primary completion
June 2026
This trial's estimated completion date has passed — the record may not be fully up to date.
Age range
18 Years – 65 Years
Sex
Male only
Last updated on clinicaltrials.gov in March 2025.
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Central contact
Gabriel Eksteen, MSc
KU Leuven
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.