The main complication of vitamin D toxicity is hypercalcemia, which is higher-than-normal levels of calcium ... you whether they are in the healthy range or if supplementation is necessary.

They measure vitamin D using one of two measurements: nanomoles per liter (nmol/l) or nanograms per milliliter (ng/ml). The following table provides rough ranges for low, normal, and high vitamin ...

New research suggests vitamin D may help slow biological aging by reducing telomeres shortening, a key marker of cellular ...

Vitamin D supplements may help prevent the loss of telomeres, DNA sequences that shrink with aging, a large study shows. But ...

There has been no consensus on the optimal level of vitamin D intake to reduce PTH, and this is why many laboratories report the normal range of vitamin D to be so wide (20 to 40 ng/ml ...

Vitamin D supplements helped slow telomere shortening in older adults, suggesting they may support cellular health and slow ...

while those with normal vitamin D levels tend to have better cholesterol levels. Understanding how vitamin D and cholesterol interact can help ensure your levels stay within a healthy range.

Anon. ANSWER: Well, first off, I don’t see the reason for a panicked call, since a level of 29 ng/mL is in the range that most experts consider acceptable. A very large study on vitamin D ...

“When your vitamin D level is normal, you feel normal,” says NewYork-Presbyterian/Columbia University Irving Medical Center’s clinical dietitian Rachel O’Connor. “But even though you may ...