Office of Dietary Supplements recommends the amount of vitamin D certain age groups should get each day, in micrograms (mcg) and International Units (IU): Birth-to-12 months: 10 micrograms/400 ...

Vitamin D deficiency is a widespread concern, affecting a significant portion of adults. While supplementation can help, choosing the right form, like D3, is crucial. Dosage should be tailored to ...

In the United States, current guidelines suggest that consuming 400–800 International Units (IU), or 10–20 micrograms (mcg), of vitamin D should meet the needs of 97%–98% of all healthy people.

A new study suggests that vitamin D supplementation may help preserve the lengths of the protective caps at the ends of ...

should get 1,500 to 2,000 international units of vitamin D each day. Infants under one year of age and children and adolescents 18 and under should receive 400 to 1,000 and 600 to 1,000 units a ...

“The timing of when to take the vitamin D supplement shouldn’t matter, but it should be taken with food,” Davidson says.

Research shows that taking 60,000 international units (IU) of vitamin D a day ... Most healthy people only need 400 to 800 IU of vitamin D a day, depending on your age and whether you’re ...

The recommended dietary allowance (RDA) for vitamin D is 600 International Units from ages 1 to 70. Under age 1, the recommendation is 400 IU. People ages 70 or older have an RDA of at least 800 IU.

Our latest tests yield some good news for the many people who take a daily vitamin D pill, or one that combines calcium and vitamin D: All of the 32 products met or exceeded their claimed levels ...

A new study reports that vitamin D supplementation may help slow some of the mechanisms of biological aging.The research, published in The American Journal of Clinical Nutrition, suggests that vitamin ...

Vitamin D, the so-called “sunshine vitamin” as it’s produced in the skin during sun exposure, is one of the most important nutrients for our health, yet many of us are not getting enough of it.