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

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 ...

Despite its importance, roughly 41% of people in the United States have a vitamin D insufficiency. Rates of vitamin D deficiency are higher for women ... increase blood levels of vitamin D ...

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 ...

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

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 ...

A 2022 national survey found that 13.5% of U.S. adults said they felt “very tired” or “exhausted” most days or every day over ...

Previously, the Endocrine Society defined vitamin D levels in terms of "deficiency" and "insufficiency" based on serum 25-hydroxyvitamin D (25[OH]D) levels. However, the new guidelines no longer ...

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 ...

with appropriate vitamin D levels than in women with lower vitamin levels, according to research. If your vitamin D levels aren't within normal ranges, you may experience issues if you're already ...