Calcium and vitamin D supplementation linked to kidney stones27 June 2012Replacing natural sources of calcium and vitamin D with supplements may increase the risk of developing kidney stones, according to scientists from the Creighton Medical Center, Nebraska. The research, which was published at The Endocrine Society's 94th Annual Meeting, studied 163 healthy, postmenopausal women aged 57-85 and found long-term consumption of calcium and vitamin D to be associated with high levels of calcium in the blood (hypercalcemia) and urine (hypercalciuria). The scientists, led by Professor J Christopher Gallagher, warned that long-term use may raise the risk of hypercalcemia and hypercalciuria, which can lead to kidney stones. "The use of calcium and vitamin D supplementation may not be as benign as previously thought," said Gallagher. "Pending further information, people should not exceed the guidelines suggested by the Institute of Medicine, which are 800 international units of vitamin D, and 800-1,200 milligrams per day of calcium." The team added that previous research had identified a link between calcium and vitamin D consumption and potentially fatal health conditions such as heart attacks. | |
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