Trial of Vitamin D Fortified Milk

October 25, 2016 updated by: Eduardo Villamor, University of Michigan

A Randomized Trial of Milk Fortified With Vitamin D in Colombia

Prevalence of VDD is high worldwide, even in sunbathed equatorial regions where it had not been suspected before. The most cost-effective method for reducing population-wide VDD is through fortification of commonly consumed foods. Nevertheless, the efficacy of fortification varies by dose, duration, and population characteristics; and it is currently unknown whether it could be an efficacious public health intervention to curb the VDD epidemic among children living in tropical areas. We propose to conduct a randomized, controlled, double blind trial to assess the effect of vitamin D3 fortification of milk on serum 25-hydroxyvitamin D concentrations in school-age children and their mothers in Bogotá, Colombia. Eighty families with a child participating in an ongoing cohort study will be randomized to receive one liter per day of either skim milk fortified with 600 IU vitamin D3 per 250mL or unfortified skim milk for a six-week period. Caregivers will be instructed to give the index child two cups of milk per day and to distribute the remaining milk to the rest of the family. We will measure serum 25(OH)D concentrations of the children and mothers at baseline and at the end of the intervention period.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

80

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Colombia
      • Bogota, Colombia
        • FINUSAD - Foundation for Research in Nutrition and Health
      • Chia, Colombia
        • University of La Sabana

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

12 years to 14 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Age between 144 and 174 completed months by the time of enrollment.
  2. Intention to stay in the city for the next six weeks.
  3. Children living with their biological mothers.
  4. Families own a refrigerator.

Exclusion Criteria:

  1. History of illness involving calcium or bone metabolism, including stones of the urinary tract.
  2. Currently taking vitamin D supplements as treatment of any disease.
  3. Receiving immunosuppressive therapy (oral corticosteroids, chemotherapy) during the previous year.
  4. Known history of lactose intolerance or other contra-indications or aversion to milk intake.
  5. Known hypercalcemia.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Vitamin D-fortified milk
Skim milk fortified with 600 IU vitamin D3 / 250 mL
Dietary supplement: Vitamin D
Active Comparator: Vitamin D-unfortified milk
Unfortified skim milk
Dietary supplement: No vitamin D

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Serum concentrations of 25-OH vitamin D
Time Frame: up to 6 weeks
up to 6 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Michigan

Investigators

  • Study Director: Mercedes Mora, MSc, RD, FINUSAD - Foundation for Research in Nutrition and Health
  • Study Director: Henry Oliveros, MD, MSc, University of La Sabana
  • Principal Investigator: Eduardo Villamor, MD, DrPH, University of Michigan

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2013

Primary Completion (Actual)

October 1, 2013

Study Completion (Actual)

October 1, 2016

Study Registration Dates

First Submitted

July 24, 2013

First Submitted That Met QC Criteria

July 25, 2013

First Posted (Estimate)

July 26, 2013

Study Record Updates

Last Update Posted (Estimate)

October 27, 2016

Last Update Submitted That Met QC Criteria

October 25, 2016

Last Verified

October 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • VDFORT

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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