“Vitamin D deficiency continues to be a worldwide health problem. It’s estimated upwards of 60% of the world’s population is ...

Taking too much vitamin D can cause serious side effects. Learn the signs, why you might feel weird after taking it, and when to talk to your healthcare provider.

Low levels of vitamin D seem to raise your risk of heart attack but scientists are still figuring out why—and whether ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. Researchers in Germany recently ...

Winter means less time in the sun, but there are foods that can help you get the vitamin D your body needs to function.

Vitamin D is an essential micronutrient that's an important part of a healthy diet. Learn what types of foods are rich in vitamin D.

Vitamin D absorption is significantly impacted by what you eat and when you take supplements. High-fibre meals, excessive vitamin A, and certain medic ...

People with vitamin D deficiency are at greater risk of becoming depressed, and those with depression are more likely to be ...

Vitamin D deficiency is very common, especially during the winter months with less sunlight. Add these foods to your diet to help.

Doctors explain why vitamin D supplements may not work properly if your kidneys are unhealthy, and how kidney function ...