Calcium Calcium

High concentrations of calcium in a ration can reduce the bioavailability of other minerals such as copper, zinc and phosphorus so excessive dietary intake should be avoided particularly in rations containing relatively small amounts of trace elements, and in individuals with impaired gastrointestinal function such as malabsorption.

High calcium intake can also stimulate hypercalcitoninism and suppress parathyroid hormone activity which may be significant and complicate the clinical picture in some cases. Excessive calcium intake should be avoided as this can encourage the development of nephrocalcinosis and other soft tissue calcification in at-risk individuals.