Alan Sacerdote1,2,3,4, Paulomi Dave5, Vladimir Lokshin6, Gül Bahtiyar7,6,8,9. 1. Division with Endocrinology, New York City Health + Hospitals/Woodhull, 760 Broadway, Brooklyn, NY, 11206, USA. walrusa@netscape.net. 2. Division of Endocrinology, SUNY Downstate Medical Center, 450 Clarkson Avenue, Brooklyn, NY, 11203, USA. walrusa@netscape.net. 3. NYU School of Medicine, 550 1st Avenue, New York, NY, 10016, USA. walrusa@netscape.net. 4. St. George's University, St. George's, WI, Grenada. walrusa@netscape.net. 5. Department of Medicine, New York City Health + Hospitals/Woodhull, 760 Broadway, Brooklyn, NY, 11206, USA. 6. Division of Endocrinology, SUNY Downstate Medical Center, 450 Clarkson Avenue, Brooklyn, NY, 11203, USA. 7. Division with Endocrinology, New York City Health + Hospitals/Woodhull, 760 Broadway, Brooklyn, NY, 11206, USA. 8. NYU School of Medicine, 550 1st Avenue, New York, NY, 10016, USA. 9. St. George's University, St. George's, WI, Grenada.
Abstract
PURPOSE OF REVIEW: There is a growing, largely inconsistent, literature on the role of vitamin D in association with type 2 diabetes, insulin resistance/insulin secretion, glycemic indices, and complications of type 2 diabetes. Pathophysiologic, bystander, preventive, and treatment roles of vitamin D have all been proposed. In this focused review, we attempt to organize and clarify our current information in this area. RECENT FINDINGS: Clinical study interpretation is difficult because of variability in dosage, dosage form, study duration, and populations studied, as well as recently reported normal human polymorphisms in vitamin D synthesis and catabolism, vitamin D-binding protein, and vitamin D receptors in addition to a host of potential epigenetic confounders. Low vitamin D status appears to be associated with type 2 diabetes and most other insulin resistance disorders reported to date. The extraskeletal benefits of supplementation/repletion in these disorders in our species, with a few highlighted exceptions, remain to be established. This focused review attempts to summarize our current knowledge in this burgeoning area through a review of key meta-analyses, observational studies, randomized control trials, and Mendelian randomization studies and will hopefully serve as a guide to indicate future research directions and current best practice.
PURPOSE OF REVIEW: There is a growing, largely inconsistent, literature on the role of vitamin D in association with type 2 diabetes, insulin resistance/insulin secretion, glycemic indices, and complications of type 2 diabetes. Pathophysiologic, bystander, preventive, and treatment roles of vitamin D have all been proposed. In this focused review, we attempt to organize and clarify our current information in this area. RECENT FINDINGS: Clinical study interpretation is difficult because of variability in dosage, dosage form, study duration, and populations studied, as well as recently reported normal human polymorphisms in vitamin D synthesis and catabolism, vitamin D-binding protein, and vitamin D receptors in addition to a host of potential epigenetic confounders. Low vitamin D status appears to be associated with type 2 diabetes and most other insulin resistance disorders reported to date. The extraskeletal benefits of supplementation/repletion in these disorders in our species, with a few highlighted exceptions, remain to be established. This focused review attempts to summarize our current knowledge in this burgeoning area through a review of key meta-analyses, observational studies, randomized control trials, and Mendelian randomization studies and will hopefully serve as a guide to indicate future research directions and current best practice.
Entities:
Keywords:
Diabetes complications; Insulin resistance; Metabolic syndrome; T2DM; Vitamin D deficiency; Vitamin D status
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