In April, two unvaccinated children 5 infected with measles died in Texas amid an outbreak that has grown to more than 740 ...

Vitamin A deficiency, often overlooked, silently affects millions, especially in developing nations, posing risks to eyesight ...

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.