NCT01385085UnknownNot Applicable
Impact of Work Environment Absent of Natural Light on Vitamin D Levels
Medical Corps, Israel Defense Force0 sites300 target enrollmentStarted: November 2011Last updated:
Conditions
Trial Snapshot
- Phase
- Not Applicable
- Sponsor
- Enrollment
- 300
Study Overview
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.
Study Design
- Study Type
- Observational
- Observational Model
- Case Crossover
- Time Perspective
- Cross Sectional
Eligibility Criteria
- Ages
- 18 Years to 45 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
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.
Investigators
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