Vitamin d pills tested for obese Teens' heart health

NCT ID NCT02400151

Completed Disease control Sponsor: Centre Hospitalier Universitaire de Nīmes Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether giving vitamin D supplements to obese teenagers, along with a healthy diet and exercise program, could improve how well their blood vessels work. 49 teens took either vitamin D or a placebo for 90 days. The main goal was to see changes in blood vessel function, which is important for heart health.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Vitamin D3
What this could lead to: If successful, this could show that adding vitamin D to diet and exercise helps improve blood vessel health in obese teens, pointing toward a simple supplement to reduce heart risks.
What could go wrong: This is a small, completed Phase 4 trial with only 49 participants. Results may not apply to all teens, and vitamin D alone is unlikely to be a major solution for obesity-related problems.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

OBESITY

Contacts and locations

Locations

CHRU de Nîmes - Hôpital Universitaire Carémeau

Nîmes, 30029, France
Institut Saint Pierre

Palavas-les-Flots, 34250, France

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