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Sunlight Exposures Effect on Serum Vitamin D Levels

NCT00473317 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 6

Last updated 2008-04-01

No results posted yet for this study

Summary

When people eat a meal, some, but not all of the calcium in that meal is absorbed, that is, moved into the bloodstream. When the skin is exposed to sunlight during summer months, Vitamin D is made there and then modified into more active forms by the liver and kidneys. These more active forms of Vitamin D improve calcium absorption. Many adults living in the U.S. have little or no sun exposure and are low in Vitamin D. We know that specific wavelengths of sunlight called Ultraviolet-B cause Vitamin D to be made in the skin.

Conditions

  • Vitamin D Deficiency

Interventions

BEHAVIORAL

Sun Exposure

Each subject will wear a swimming suit and be exposed to sunlight for 30 minutes total (15 minutes lying on back, 15 minutes lying on stomach).

Sponsors & Collaborators

  • Creighton University

    lead OTHER

Principal Investigators

  • Laura A Armas, MD · Creighton University

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
19 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2007-07-31
Primary Completion
2007-09-30
Completion
2007-09-30

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00473317 on ClinicalTrials.gov