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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.
The UK National Health Service (NHS) recommends that people at risk of vitamin D deficiency, breast-fed babies, formula-fed babies taking less than 500 ml/day, and children aged 6 months to 4 years, should take daily vitamin D supplements throughout the year to ensure sufficient intake. [56]
The Signs of Vitamin D Deficiency. Vitamin D deficiency is a pretty common problem for people year-round—and that deficit only increases in the winter. Be sure to stay on top of your doctor ...
Here are six health benefits that will make you want to keep your vitamin D level in check at all times. 1. It supports immunity ... Signs of vitamin D deficiency. Fatigue. Mood changes. Muscle ...
A circulating level of 25-hydroxyvitamin D greater than 30 ng/mL is required to maintain a healthy level of vitamin D, per the NIH—so if you're lower than that, your doc may suggest a supplement.
Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin A and selenium) that can be harmful in large amounts. This is the highest level of sustained daily nutrient consumption that is considered to be safe for, and cause no side effects in, 97.5% of healthy individuals in each life stage and sex group.
Taking too much vitamin D can be toxic in rare cases, as with an 89-year-old U.K. man who died in March in part from vitamin D toxicity (though he did have several underlying conditions).
Cholecalciferol is a form of vitamin D which is naturally synthesized in skin and functions as a pro-hormone, being converted to calcitriol. This is important for maintaining calcium levels and promoting bone health and development. [4] As a medication, cholecalciferol may be taken as a dietary supplement to prevent or to treat vitamin D ...