Underactive parathyroid ( hypoparathyroidism).

Taking specific forms of vitamin D, called calcitriol or dihydrotachysterol, by mouth along with phosphate supplements is effective for treating bone disorders in people with low levels of phosphate in the blood. A rare, inherited bone disorder marked by low levels of phosphate in the blood (familial hypophosphatemia).This can be done by taking 400-1000 IU of vitamin D daily or spending 15-30 minutes in the sun each day. But it is important to maintain healthy levels of vitamin D. There is also no strong evidence to support using vitamin D supplements for COVID-19. People also use vitamin D for weak and brittle bones, heart disease, asthma, hay fever, and many other conditions, but there's no good scientific evidence to support many of these uses. People who don't get enough sun and people who are 65 years or older are at risk for deficiency. Vitamin D supplements are commonly used to treat and prevent vitamin D deficiency.

During periods of sunlight, vitamin D is stored in fat and then released when sunlight is not available. It's also made in the skin when exposed to sunlight. Vitamin D is found in fish, eggs, and fortified milk. There are different forms of vitamin D, including ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). It also plays a role in maintaining proper bone structure. Vitamin D is an essential vitamin that helps regulate calcium and phosphorus in the body.

Risk pc 2000