Although vitamin D has been reported to have pleiotropic effects including effects on the
immune system and on cancer progression, the principal action of vitamin D is the …

It is now clear that vitamin D has important roles in addition to its classic effects on calcium
and bone homeostasis. As the vitamin D receptor is expressed on immune cells (B cells, T …

Vitamin D has many physiological functions including upregulation of intestinal calcium and
phosphate absorption, mobilization of bone resorption, renal reabsorption of calcium as well …

Research carried out during the past two-decades extended the understanding of actions of
vitamin D, from regulating calcium and phosphate absorption and bone metabolism to many …

General knowledge of the role of vitamin D3 in human physiology has been shaped by its
discovery as a preventive agent of nutritional rickets, a defect in bone development due to …

Background: Inadequate serum vitamin D is associated with secondary
hyperparathyroidism, increased bone turnover, and bone loss, which increase fracture risk …

Accumulating data support that vitamin D possesses several biological and molecular
actions apart from its role in calcium homeostasis. Immune cells express vitamin D receptor …

The plethora of vitamin D studies over the recent years highlight the pleomorphic effects of
vitamin D outside its conventional role in calcium and bone homeostasis. Vitamin D …