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Mapping of several bone diseases onto levels of vitamin D (calcidiol) in the blood [6] Normal bone vs. osteoporosis. Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body.
A lack of exposure to sunlight, the natural process of aging, and high levels of body fat can all contribute to vitamin D deficiency, which can lead to osteoporosis, bone and joint pain, and ...
Vitamin D (the inactive version) is mainly from two forms: vitamin D 3 and vitamin D 2. Vitamin D 3, or cholecalciferol, is formed in the skin after exposure to sunlight or ultra violet radiation or from D 3 supplements or fortified food sources. Vitamin D 2, or ergocalciferol, is obtained from D 2 supplements or fortified food sources. [3]
The U.S. Preventive Services Task Force say vitamin D supplements do not reduce the risk of falls or bone fractures in healthy older adults. The draft recommendation notes vitamin D can be helpful ...
Common, most foods do not contain vitamin D, indicating that a deficiency will occur unless people get sunlight exposure or eat manufactured foods purposely fortified with vitamin D. Vitamin D deficiency is a known cause of rickets, and has been linked to numerous other health problems. [46] [47] Vitamin E deficiency
Vitamin D deficiency, especially in early life, is linked to an increased risk of autoimmune conditions, such as type 1 diabetes. Autoimmune diseases can be caused by a failure of T cells, a type ...