Vitamin A: What Is, Roles, Deficiency, and Excess

What Is Vitamin A?

Vitamin A is the common name for several organic compounds from the retinoid group. It is also often referred to as retinol, beta-carotene, axerophthol, and provitamin A. It belongs to the group of fat-soluble vitamins. In plants, this compound accumulates and occurs in the form of carotenoids. In the organism, vitamin A is held as retinol in the liver and adipose tissue….