Open AccessConundrum of vitamin D on glucose and fuel homeostasis
Author(s) -
Maria Mercedes Chang Villacreses,
Rudruidee Karnchanasorn,
Panadeekarn Panjawatanan,
Horng–Yih Ou,
Ken C. Chiu
Publication year - 2021
Publication title -
world journal of diabetes
Language(s) - English
Resource type - Journals
ISSN - 1948-9358
DOI - 10.4239/wjd.v12.i9.1363
Subject(s) - vitamin d and neurology , medicine , diabetes mellitus , glucose homeostasis , endocrinology , vitamin , homeostasis , calcium metabolism , endocrine system , vitamin d deficiency , hormone , calcium , insulin resistance
As an endocrine hormone, vitamin D plays an important role in bone health and calcium homeostasis. Over the past two decades, the non-calcemic effects of vitamin D were extensively examined. Although the effect of vitamin D on beta cell function were known for some time, the effect of vitamin D on glucose and fuel homeostasis has attracted new interest among researchers. Yet, to date, studies remain inconclusive and controversial, in part, due to a lack of understanding of the threshold effects of vitamin D. In this review, a critical examination of interventional trials of vitamin D in prevention of diabetes is provided. Like use of vitamin D for bone loss, the benefits of vitamin D supplementation in diabetes prevention were observed in vitamin D-deficient subjects with serum 25-hydroxyvitamin D < 50 nmol/L (20 ng/mL). The beneficial effect from vitamin D supplementation was not apparent in subjects with serum 25-hydroxyvitamin D > 75 nmol/L (30 ng/mL). Furthermore, no benefit was noted in subjects that achieved serum 25-hydroxyvitamin D > 100 nmol/L (40 ng/mL). Further studies are required to confirm these observations.