Vitamin D supplements are among the most widely used in the United States, especially among people who don’t get enough sunlight or vitamin-D-rich foods. Health experts say daily supplementation can ...

Plus, how to up your intake.

Vitamin D has long been known as an essential nutrient for strong bones and teeth, but in recent years it has gained a new reputation as a "longevity" vitamin because of its wide-reaching role ...

They may recommend taking a high dose of vitamin D for the first few weeks just to try and get you back to normal. You’ll want to test again about six months later to see if that supplementation was ...

Here’s what vitamin D3 is and why your body needs it.

Understanding Vitamin D Deficiency Vitamin D deficiency has become a widespread issue in recent times. Many individuals take supplements, particularly Vitamin D3, and spend time in the sun, yet blood ...

A viral claim links common vitamin deficiencies to hidden depression, but what does the science actually show?

Low vitamin D levels may affect your sex drive by influencing hormones, mood, energy, and blood flow. Learn how vitamin D deficiency affects libido and whether supplements can help.

Adults with a deficiency of vitamin D are at increased risk for developing dry eye disease than those without low levels of the nutrient, a study finds.

The report warns that symptoms of hypervitaminosis D can include: drowsiness; confusion; apathy; psychosis; depression; stupor; coma; anorexia; abdominal pain; vomiting; constipation; peptic ulcers; ...

You might have heard that vitamin D can be crucial for bone health, and that taking supplements may be in order if you're not getting enough naturally from sunlight or from D-rich foods like eggs, ...

Add Yahoo as a preferred source to see more of our stories on Google. Here’s what to know about vitamin D benefits and risks, particularly when it comes to ending fatigue. (Getty Images) You might ...