Medically reviewed by Jamie Johnson, RDN Key Takeaways How fast vitamins work depends on factors such as the type of vitamin, your health, and how consistently you take them.If you’re deficient, you ...

Vitamin D is particularly important for women, supporting bone health and pregnancy. Learn about vitamin D, its benefits, how much women should have daily, and more.

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

It might help your sleep, too.

Vitamin D is one of the most essential nutrients for a child’s growth, yet it often goes unnoticed in daily health routines.

Vitamin D helps your body absorb calcium, supports bone health, and lowers inflammation. Supplementing with vitamin D can lower LDL and total cholesterol, but doesn't affect HDL cholesterol. High ...

Adults and children over four years old should take 10 micrograms (400IU) of vitamin D per day during the autumn and winter.

Plus, how to tell if you need to supplement at all.