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

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01385085

Enrollment

300

Registered

2011-06-29

Start date

2011-11-30

Completion date

Unknown

Last updated

2011-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Vitamin D Deficiency

Keywords

Vitamin D, Sunlight, Deficiency

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.

Interventions

None listed

Study design

Observational model

CASE_CROSSOVER

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to 45 Years

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.

Outcome results