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Vitamin D toxicity, or hypervitaminosis D, is the toxic state of an excess of vitamin D. The normal range for blood concentration of 25-hydroxyvitamin D in adults is 20 to 50 nanograms per milliliter (ng/mL).
Hypervitaminosis is a condition of abnormally high storage levels of vitamins, which can lead to various symptoms as over excitement, irritability, or even toxicity. Specific medical names of the different conditions are derived from the given vitamin involved: an excess of vitamin A, for example, is called hypervitaminosis A.
4. Not Enough Vitamin D. You shouldn’t get too much sun, but some vitamin D exposure is essential. A review of studies found that people with certain autoimmune diseases may have a vitamin D ...
Taking too much vitamin D. Mitchener’s cause of death was multipronged; his autopsy report named hypercalcemia, acute kidney failure, congestive heart failure, and ischemic heart disease as ...
Insufficient vitamin D synthesis such as defective 25-hydroxylation, 1-alpha hydroxylase, and 1-alpha 25-hydroxylation can also contribute to vitamin D deficiency. Lack of vitamin D leads to reduced calcium absorption by the intestine leading to hypocalcemia and increased parathyroid hormone secretion. This increases bone resorption.
Therefore, foods high in vitamin D will be the best ways to prevent a deficiency, says Prest. Some of the best food sources of vitamin D, according to Prest, include: Salmon. Mackerel. Sardines ...
For a healthy individual, if calcium levels are high, the kidneys will decrease its production of calcitriol (active vitamin D) by reducing the hydroxylation of calcidiol (inactive vitamin D); lower calcitriol levels means a lower rate of calcium absorption in the small intestine, which eventually offsets the elevated calcium levels. [10]
Find zinc in seeds and nuts, oysters, and dark chocolate; get vitamin D through eggs (the yolk), oily fish like salmon and sardines, mushrooms, and fortified orange juice or dairy products. 3 ...