As a rule, younger people need less vitamin D than older people, regardless of sex. This article explains average vitamin D ...

Vitamin D is essential to maintain bone strength. It’s deficiency can lead to pain in the lower back and can lead to earlier osteoporosis.

or stiffness-especially in the morning-who assume that to be part of normal aging. A 2020 study published in The Journal of Bone and Mineral Research found that women with vitamin D levels below ...

Those with low serum vitamin D levels (<30 ng/mL) were nearly 5 times more likely to experience menstrual disorders, including long cycles, oligomenorrhea (infrequent periods) and amenorrhea (absence ...

However, 800 to 1,000 IU is the dose that may have a better chance of giving a patient a normal vitamin D level. In some countries, vitamin D is listed in micrograms, and the relationship is as ...

Your vitamin D test results will show whether your levels are low, normal, or high. The level ranges can vary slightly depending on the lab used to analyze the test. Vitamin D deficiency can also ...

Vitamin D supplementation for postmenopausal women and older men — given that those populations had normal vitamin D levels, no previous fractures, and no issues with bone density — was found ...

Vitamin D is important for healthy bones, teeth, and immune function but, as it is said, excess of anything can lead to ...

Over the past few decades, the "normal" blood level of vitamin D (25-OH vitamin D) was based on the amount needed to keep PTH from becoming abnormally high. Again, PTH at high levels can cause ...