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Chronic kidney disease and vitamin D: how much is adequate?
Marco Ruggiero1, Stefania Pacini
1Department of Experimental Pathology and Oncology, University of Firenze, Firenze, Italy. marco.ruggiero@unifi .it
Kidney International
|October 16, 2009
Summary
Adults with chronic kidney disease (CKD) often have low vitamin D levels, increasing their mortality risk. Genetic variations in vitamin D receptors may explain why some individuals require higher vitamin D intake.
Area of Science:
- Nephrology
- Endocrinology
- Nutritional Science
Background:
- Chronic kidney disease (CKD) is prevalent in the United States.
- Hypovitaminosis D, or vitamin D deficiency, is a common comorbidity in adults with CKD.
- This vitamin D deficiency is linked to an elevated risk of mortality in the CKD population.
Discussion:
- The precise definition of adequate vitamin D levels remains elusive.
- Genetic variations, specifically polymorphisms in the vitamin D receptor (VDR) gene, may contribute to this uncertainty.
- Individuals with less efficient VDR variants might necessitate higher vitamin D supplementation.
Key Insights:
- Hypovitaminosis D persists in US adults with CKD.
- Vitamin D deficiency in CKD patients is a significant risk factor for mortality.
- VDR gene polymorphisms could influence individual vitamin D requirements.
Outlook:
- Further research is needed to clarify optimal vitamin D levels for CKD patients.
- Investigating VDR genotypes may personalize vitamin D therapy in CKD.
- Understanding genetic influences on vitamin D metabolism is crucial for improving CKD outcomes.
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