The final rule for Meaningful Use Stage 3 is out and addressed concerns regarding reporting burden, interoperability and reporting periods.
Vitamin D acts also to increase blood concentrations of calcium. It is generated through the activity of parathyroid hormone within the kidney. Far and away the most important effect of vitamin D is to facilitate absorption of calcium from the small intestine.In concert with parathyroid hormone, vitamin D also enhances fluxes of calcium out of bone. Calcitonin is a hormone that functions to reduce blood calcium levels.itamin D acts also to increase blood concentrations of calcium. It is generated through the activity of parathyroid hormone within the kidney. Far and away the most important effect of vitamin D is to facilitate absorption of calcium from the small intestine.
Approximately 400 mg of the usual 1000 mg dietary calcium intake is absorbed by the intestine, and calcium loss by way of intestinal secretions is approximately 200 mg/d. Therefore, a net absorption of calcium is approximately 200 mg/d (20%) (3).