A vitamin A deficiency occurs when the body doesn't get enough vitamin A, a fat-soluble vitamin. The human body does not produce vitamin A, so you must get it from your food. It's important for ...

A vitamin A deficiency can increase the chance of developing severe measles if you’re already infected, so supplements are sometimes given to measles patients in low-income countries where ...

Mental health issues are increasing aggressively but vitamin D might also have a role to play Learn how vitamin D deficiency ...

Dull strands, flaky scalp, or sudden shedding? Experts break down how vitamin A affects hair health, how much you really need ...

Discover the 8 best vitamins for improving blood circulation in your legs. Learn how these nutrients support healthy blood ...

It could lower the risk of major cardiovascular events overall. Here's what to know—and how to decide if a supplement is a ...

Fat-soluble vitamins — A, D, E and K — are stored in the body’s fatty tissue, liver and muscles, ... Certain vitamin deficiencies can potentially cause health problems.

Vitamin D, or calciferol, is a fat-soluble vitamin that plays a key role in maintaining bone health, ... "Vitamin D deficiency is not always characterized by noticeable symptoms," says Hodson.

This is precisely why you don’t want to have a vitamin D deficiency. Neil Paulvin, DO, ... Vitamin D is a fat-soluble vitamin and hormone that includes vitamins D1, D2, and D3.

Vitamin K is a fat-soluble nutrient found in a variety of foods. While rare, it’s possible to develop vitamin K deficiency bleeding if your body doesn’t get enough of this important nutrient.

It’s a fat-soluble vitamin, meaning excess vitamin K gets stored in the liver and fat tissue. And unlike some other vitamins, your body can make vitamin K on its own. Another way to get vitamin ...