Plain-English translation of NCT03008525 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
Researchers know that people with obesity tend to have lower levels of vitamin D in their blood, but they don't fully understand why. This study hypothesizes that vitamin D may be getting trapped or stored in body fat tissue. To test this idea, the researchers will collect small samples of fat tissue from people undergoing surgery—both those with obesity and those without—and measure exactly how much vitamin D and related substances are present in that tissue.
Many studies show a connection between obesity and low vitamin D levels, but the reason for this connection hasn't been proven. Understanding whether body fat actually sequesters vitamin D could help doctors better manage vitamin D deficiency in people with obesity and improve overall health outcomes.
You likely qualify if…
You likely don't qualify if…
If you qualify and agree to participate, you will undergo your planned abdominal surgery as scheduled. During that surgery, the surgeon will collect a small sample of your fat tissue—a routine procedure that adds no extra risk or recovery time. Researchers will then analyze this tissue sample to measure vitamin D levels and study related genes. Your participation is essentially passive; the main requirement is allowing the tissue sample to be taken during your surgery.
AI-generated summary from trial data · Jun 22, 2026 · Not medical advice
France