vitamin A

A nutrient that the body uses to help vision, bone growth and reproduction, as well as to fight infections and keep skin and mucous membranes healthy.

Vitamin A is found in liver, egg yolks, dairy products and fish oils. The body also makes vitamin A from carotenoids (substances found in yellow and orange vegetables and fruits, as well as in dark green, leafy vegetables).

Also called retinol. Naturally occurring or synthetic substances similar to vitamin A are referred to as retinoid.