Researchers are still trying to understand why some people develop Long COVID: lasting symptoms of the disease that can ...

In a large, randomized trial, researchers at Mass General Brigham found that high-dose vitamin D3 did not reduce COVID-19 ...

Evidence from randomized trials suggests that calcium supplements may not significantly reduce fracture risk in well-nourished adults.

A large new study suggests that vitamin D supplements may help slow one of the body’s basic aging processes. Researchers ...

“Egg yolks are one of the few natural sources of vitamin D, and because vitamin D is fat-soluble, pairing eggs with healthy fats—like avocado or olive oil—helps your body use it more effectively,” ...

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.

Sunlight can have positive effects on your sleep, mood, metabolic health and more. Here’s how much exposure you need to see ...

Researchers found that vitamin D deficiency increases levels of key inflammatory markers and that getting more vitamin D may ...

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 ...

Despite living in an age of abundant food options and supplements, certain vitamin and mineral deficiencies remain surprisingly common – and vitamin D is among the most widespread. Research ...