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Other factors that can sometimes cause phosphate levels to rise include excess vitamin D, decrease in magnesium levels in the body and for women, pregnancy. Low phosphate levels, on the other hand are indicative of hyperparathyroidism, osteomalacia, kidney and liver infections, lack of vitamin D and intense burns.
This increase in parathyroid hormone causes more calcium to be taken from the bone and more calcium to be reabsorbed by the intestines and kidney. Medical conditions that cause low blood calcium levels or interfere with the body's ability to break down and remove phosphate can lead to secondary hyperparathyroidism. Too much phosphate causes changes in calcium levels. Kidney failure is a common cause of secondary hyperparathyroidism. Kidney failure can interfere with the body's ability to remove phosphate. Other causes of secondary hyperparathyroidism may include: Calcium deficiency.