Learn about normal vitamin D levels by age. This article also looks at sources of vitamin D, symptoms of vitamin D toxicity, and more.

For adults, a typical level of vitamin D in the blood is 20 nanograms per milliliter (ng/ml) or above. Levels of 12 ng/ml are too low and levels of 50 ng/ml are too high. High or low levels may ...

Most adults need at least 15 micrograms (mcg)—or 600 international units ( IU)—of vitamin D daily to maintain healthy levels. The amount recommended for children and older adults depends on age.

It noted as much as 17 % of dementia cases could be prevented in some populations by increasing everyone to "normal" levels of vitamin D, which they described as 50 nmol/L – the vitamin D ...

Nov. 17 -- MONDAY, Nov. 16 (HealthDay News) -- If your levels of vitamin D are too low, you may be at significantly increased risk for stroke, heart disease and death, a new study suggests ...

Individuals with dementia had lower vitamin D levels (about 16.2 ng/mL) than those with mild cognitive impairment (average 20 ng/mL) or whose memory was normal (19.7 ng/mL), according to the results.

Vitamin D and cholesterol share a complex relationship. While vitamin D may help lower cholesterol levels, some studies suggest vitamin D can actually raise them.

Vitamin D has an impact on the health and the body, helping out with bone health, immunity system, and also regulates the mood. However, its deficiency often happens because these symptoms can ...

Similarly, surgical patients with low Vit D levels also healed slower than their normal Vitamin D counterparts clinically (83.0 vs. 50.0 d, p=0.031) and radiographically (203.0 vs. 88.0 d, p=0.043).