ABSTRACT
Metabolism ......................................................................................... 17 2.3.2 Vitamin D Status and Signaling in Intestinal Calcium Absorption ... 19 2.3.3 Molecular Models of Calcium Absorption ......................................... 21 2.3.4 Evidence for Regulation of Calcium Absorption by Other
Hormones ............................................................................................24 2.3.4.1 Pregnancy and Lactation .....................................................25 2.3.4.2 Growth Hormone and IGF-1 ................................................25 2.3.4.3 Glucocorticoids ....................................................................26 2.3.4.4 PTH, FGF23, and Thyroid Hormone ...................................26 2.3.4.5 Estrogen ...............................................................................27 2.3.4.6 Androgens ............................................................................27
