Different types of vitamin A - targets different parts of your body

From the interesting fact file discovered out this morning that the body uses three different types of vitamin A. Retinal, a aldehyde affects vision, retinol, an alcohol, affects reproduction and retinoic acid affects cellular growth and division.

There is also a vitamin A2 which is found in fresh water fish, however mammals including humans cannot use this.

Reference: Tomkins and Hussy Vitamin A and Immunity Nutrition Research Reviews vol 2, 1989 pg 18