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

Medical Corps, Israel Defense Force

Status

Unknown

Conditions

Vitamin D Deficiency

Study type

Observational

Funder types

Other

Identifiers

NCT01385085

922-2010-IDF-CTIL

Details and patient eligibility

About

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.

Enrollment

300 estimated patients

Sex

All

Ages

18 to 45 years old

Volunteers

Accepts Healthy Volunteers

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.