Vitamin D in health and disease.

  title={Vitamin D in health and disease.},
  author={Robert P. Heaney},
  journal={Vnitrni lekarstvi},
  volume={29 7},
Vitamin D functions in the body through both an endocrine mechanism (regulation of calcium absorption) and an autocrine mechanism (facilitation of gene expression). The former acts through circulating calcitriol, whereas the latter, which accounts for more than 80% of the metabolic utilization of the vitamin each day, produces, uses, and degrades calcitriol… CONTINUE READING