Impact of Work Environment Absent of Natural Light on Vitamin D Levels

• Conditions: Vitamin D Deficiency

• Registration Number: NCT01385085
• Lead Sponsor: Medical Corps, Israel Defense Force

Brief Summary

Three types of workers exposed to different levels of natural sunlight will be tested for Vitamin D blood level, PTH, Ca, P, albumin and alkaline phosphatase.

In addition, each tested worker will be asked to fill a questionnaire for demographic, medical and personal habit information.

Detailed Description

Not available

Study Timeline

• Status Verified: 2011-06
• Study First Submitted: 2011-06-28
• Study First Submitted QC: 2011-06-28
• Last Update Submitted: 2011-06-28
• Study First Posted: 2011-06-29
• Last Update Posted: 2011-06-29
• Study Start: 2011-11

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 300

Inclusion Criteria

• people employed in their current work place at least 6 months,

Exclusion Criteria

• people who consume food additives containing Vitamin D.
• people who have a chronic illness which harms the Vitamin D absorption, such as Celiac, chronic Pancreatitis, Cystic Fibrosis and IBS.
• people who have a chronic illness which harms Vitamin D metabolism, such as chronic hepatitis, kidney insufficiency and Nephrotic Syndrome.
• pregnant women.
• people who require prescribed medicine like steroids, anti-convulsion, and HIV treatments.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified