Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents
Public ClinicalTrials.gov record NCT01856946. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
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Official title
Effect of 4,000 IU Vitamin D3 Supplementation on Oral Glucose Tolerance Among Vitamin D Deficient Obese Adolescent
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Childhood obesity is a rapidly growing epidemic in the US and the world. Current estimates suggest that 30% of our nation's children are either overweight ot obese. Obesity is a major risk factor towards the development of insulin resistance, which, in turn is a major risk factor for the development of type 2 diabetes. Prior research has suggested that vitamin D therapy may be a safe, inexpensive, and effective method of reducing insulin resistance and a person's risk of developing diabetes. The investigators' prior studies have shown that daily 4,000 IU vitamin D therapy is a safe and effective method of improving insulin resistance based on a calculation called the HOMA-IR. The next step in identifying whether vitamin D truly improves insulin resistance is to use oral glucose tolerance testing (OGTT), which is a better real-life measure of insulin resistance compared to the previously used HOMA-IR.
Study identification
- NCT ID
- NCT01856946
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 15 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 9 Years to 19 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 2013 (Type not available)
- Primary completion
- Feb 2014 (Actual)
- Completion
- Feb 2014 (Actual)
- Last update posted
- Oct 10, 2016
2013 – 2014
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Missouri Adolescent Obesity Clinic | Columbia | Missouri | 65201 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01856946, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Oct 10, 2016 · Synced Nov 8, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01856946 live on ClinicalTrials.gov.