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Calcium Supplements Memorial Sloan Kettering Cancer Center

When blood calcium rises to standard levels, the parathyroid glands stop secreting PTH. A slight raise in blood calcium concentration stimulates the production and secretion of the peptide hormone, calcitonin, by the thyroid gland. Calcitonin inhibits PTH secretion, decreases each bone resorption and intestinal calcium absorption, and increases urinary calcium excretion . Even though this complex technique enables for rapid and tight manage of blood calcium concentrations, it does so at the expense of the skeleton . For reference, cow’s milk has around 30 to 35% bioavailability of calcium. Bioavailable calcium is the quantity of dietary calcium that is accessible...