Protein Requirements After Bariatric Surgery

Recruiting now

Conditions studied: Obesity and Overweight, Bariatric Surgery (Gastric Bypass), Protein Requirement

In brief

The study investigates protein requirements at least 1 year after gastric bypass surgery in adult males, to investigate whether protein requirements are elevated compared to protein requiremens for the general populaiotn. The main study outcome is the estimated average protein requirements for the study populaiton.

Key facts

Study ID

NCT06853652

Run by

Universitaire Ziekenhuizen KU Leuven

People needed

20

Starts

2025-03-17

Expected to finish

2026-06-25

Last updated by the study team

2025-03-03

Who can join

Age: 18 and older, up to 65. Sex: male. Healthy volunteers: not accepted.

You may qualify if…

• Male aged 18 - 65 years,
• Primary RYGB surgery one to ten years before,
• Weight stable within 5% over the last 3 months,
• Normotensive or blood pressure controlled with antihypertensive therapy,
• Provision of informed consent to participate,

You may not qualify if…

• Current diagnosis of cancer or active cancer in the preceding 1 year,
• Any chronic or acute disease which is known to affect amino acid absorption, metabolism, or requirements,
• Weight loss after bariatric surgery of less than 40% of excess weight,
• Weight regain after bariatric surgery greater than 20% of nadir weight,
• Diabetes mellitus defined as a fasting plasma glucose concentration ≥ 7.0 mmol, or HbA1c less than 6.5%, or medical treatment for diabetes.

Where it is running

• Universitaire Ziekenhuizen KU Leuven — Leuven, Belgium (enrolling)

Full record on ClinicalTrials.gov

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