Evaluation of Calcium, Vitamin D, Magnesium, and Zinc Absorption in Children

Completed · Not applicable · Has a placebo group

Conditions studied: Mineral Absorption

In brief

The goal of our research is to provide data to enhance the development of nutritional guidelines, especially as related to mineral nutrition, in children. Using human experimentation, we are studying methods of delivering the key minerals of calcium, zinc and iron in the diet so as to optimize health outcomes. We will conduct a controlled trial of vitamin D supplementation to assess the effects of vitamin D status on calcium absorption in small children. We will evaluate the effects of differing intakes of zinc on zinc and copper absorption. These studies will utilize stable isotope techniques so as to provide accurate, practically applicable information which may be obtained from the study populations in a safe manner. These data will have global application and provide a strong basis for evidence-based nutritional recommendations to be developed. Objective #1: To evaluate the effects of supplemental vitamin D in enhancing calcium absorption in healthy children 4 to 8 yrs of age. Objective #2: Assess the absorption of magnesium and zinc in healthy children 4 to 8 yrs of age.

Key facts

Study ID

NCT00868738

Run by

Baylor College of Medicine

People needed

60

Starts

2009-03-01

Expected to finish

2011-10-01

Last updated by the study team

2011-11-02

Who can join

Age: 4 and older, up to 8. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Delivery at > or = 35.0 weeks gestation with birth weight > or = 2.5 kg
• BMI: 10th - 90th percentile for age and gender
• Ages 4.0 to 8.9 years
• Ethnic distribution of greater Houston area
• Usual calcium intake 600-1200 mg/d based on two 24-hour dietary recalls by phone
• Any regularly taken (daily) vitamins and minerals must be stopped at least 1 month before starting the study

You may not qualify if…

• History of any chronic illness.
• Regularly taken (daily) medications (except seasonal allergies).
• Avoidance of dairy products or meat in the diet.

Where it is running

• Baylor College of Medicine / Texas Children's Hospital — Houston, Texas, United States

Full record on ClinicalTrials.gov

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