The Effect of Weight on Vitamin D Dose Response
Completed · Not applicable
Conditions studied: Obesity, Vitamin D Deficiency
In brief
Vitamin D3 is a vitamin that is an essential component of biological regulating systems in humans. Sun exposure is the predominant source of vitamin D3. Previous research has shown that vitamin D3 deficiency is common worldwide. It is especially common in northern countries with long winters due to inadequate sun exposure during winter. In the US, an estimated 36% to 57% of healthy middle-aged to elderly adults have vitamin D3 deficiency. Current research indicates that obesity is associated with a low vitamin D3 level.
Key facts
- Study ID
- NCT01013584
- Run by
- Creighton University
- People needed
- 67
- Starts
- 2009-11-01
- Expected to finish
- 2011-07-01
- Last updated by the study team
- 2012-06-26
Who can join
Age: 19 and older, up to 60. Sex: male. Healthy volunteers: accepted.
You may qualify if…
- men aged 19 to 60 with BMI > 30.0.
- They will have low (<1,000 IU) usual intake of vitamin D (from milk, multivitamins, supplements, and fortified foods)
You may not qualify if…
- Subjects will not have history of hepatic or renal disease.
- Subjects will not be taking medications known to affect vitamin D metabolism such as anti-seizure medications and/or corticosteroids.
- They will not be on hydrochlorothiazide medications which could cause hypercalcemia.
- They will not have diseases causing malabsorption of vitamin D, such as celiac sprue or small bowel surgeries.
- Pregnancy is also an exclusion criterion.
Where it is running
- Creighton University — Omaha, Nebraska, United States
Full record on ClinicalTrials.gov
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