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Vitamin d supplements tested for heart risk in overweight teens

NCT ID NCT07053657

Disease control Sponsor: Anhui Medical University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether vitamin D3 supplements can improve heart health in Chinese teenagers who are overweight or obese and have low vitamin D levels. 130 participants will receive either vitamin D3 or a placebo for 12 weeks. Researchers will measure changes in blood pressure, cholesterol, blood sugar, and waist size to see if vitamin D helps lower their risk for heart disease.

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 it works, this could show that vitamin D supplements help reduce heart disease risk in overweight teens with low vitamin D levels.
What could go wrong
This is a small, early-stage trial with only 130 participants. The effect may be small or not last long, and results may not apply to other groups.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 130 people

The number the study aims to enrol. It can still change while the study runs.

Started

Sep 2025

Expected to finish

Dec 2025

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

10 to 16 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Students whose caregivers signed informed consents; 2. Students with serum 25(OH)D concentration of 12-20 ng/mL; 3. Students with overweight or obesity. Exclusion Criteria: 1. Students with any disease that affects vitamin D metabolism (e.g., functional/organic brain disease, severe infectious disease, chronic gastrointestinal disease, hepatic or renal insufficiency, etc.); 2. Students with known chronic disease (e.g., cardiovascular disease); use of vitamin D supplements in the past 3 months; 3. Students with allergies to vitamin D or soybean oil ingredients.

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Conditions

The condition(s) this trial relates to.

obesity disorder vitamin D deficiency

As listed by the trial registrant

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

Cardiometabolic risk factors

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Anhui Medical University

    RECRUITING

    Anqing, Anhui, China

  • Anhui Medical University

    RECRUITING

    Hefei, Anhui, China

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