Researchers have identified a common supplement that can slow aging. It may even be in your medicine cabinet already. Science ...

A study found that daily vitamin D supplements helped slow telomere shortening—the cellular process linked to aging and ...

Dear L.M.: Overdosing on vitamin D is dangerous. Last month, I had a patient who had elevated levels of calcium, which caused ...

Long-term daily supplementation with moderate (1600 international units [IU]) or high (3200 IU) doses of vitamin D3 doesn’t reduce the risk for type 2 diabetes (T2D) among generally healthy older ...

Vitamin D is known to be essential to many aspects of human health — but a new study suggests that taking a certain form of it can have a negative effect. The more potent and longer-lasting form, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Vitamin D supports your immune system, muscle function and bone health, but now there’s another reason to ...

What is vitamin D3? Your body creates this vitamin naturally when exposed to sunlight. In the winter, however, we tend to stay inside more, making it harder to get the proper amount of D3. There are a ...

The push to prevent skin cancer may have come with unintended consequences—impaired brain function because of a deficiency of vitamin D. The “sunshine vitamin” is synthesized in our skin when we are ...

In a new study, women who were given vitamin D3 and calcium supplements had 30% lower risk of cancer than women taking placebos. The difference did not quite reach statistical significance. However, ...

Several years ago, in my early 80s, my gynecologist told me (like all women who mainly stayed indoors) that I should be taking 4,000 IU of vitamin D3 daily. Yet today, I read an article warning that ...