Hypervitaminosis D

This newsletter is about “Hypervitaminosis D”, whereas the previous one was about Hypercalcemia.  Although Hypervitaminosis D can lead to Hypercalcemia, thousands of people won’t’ have the right tests to determine the latter.  Thousands of people forego the calcium, phosphorous, and PTH tests, possibly because they are asymptomatic or they simply attribute their symptoms of these two conditions to “vitamin D deficiency” instead. 

“Hypervitaminosis D is a rare but potentially serious condition. It occurs when you take in too much vitamin D. It’s usually the result of taking high-dose vitamin D supplements.”  “Occasionally there is increased calcitriol production as in hyperparathyroidism or malignancy including some renal adenomas, sarcomas and lymphomas.”[1,2]

“Recent concerns about vitamin D deficiency have led to increased use of supplements. Most symptoms occur because of secondary hypercalcaemia with increased bone resorption and hypercalciuria.”