Vitamin D is a fat-soluble vitamin and supplement that supports bone health and the immune system. Supplements like magnesium or calcium shouldn't be taken with it.

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

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

Vitamin D supplements are widely used around the world, but health experts say it’s important to understand how daily intake can affect the body over time.

Taking vitamin C and D together boosts your immune system and supports bone health. Both vitamins may enhance wound healing and prevent infections.

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

A widely anticipated study has concluded that neither vitamin D nor fish oil supplements prevent cancer or serious heart-related problems in healthy older people, according to research presented ...

Featured pricing is subject to change. Many people don’t know what vitamin D does or why they might need one of the best vitamin D supplements to get it. Vitamin D is a fat-soluble vitamin that is ...

Vitamin D works with calcium to keep bones strong and healthy. It’s also involved in immune and brain function. Only a few ...

Medically reviewed by Lindsay Cook, PharmD Key Takeaways About 14% of people developed a vitamin D deficiency after one year ...

Your skin tone may affect how much vitamin D you have in your blood. But taking vitamin D supplements does not change skin tone. Learn how vitamin D is linked to skin tone and skin health.