WHICH ONE IS CARCINOGENIC ? DEFICIENCY OF VITAMIN A OR DIETARY BETA CAROTENE OR SUPPLEMENTS OF BETA CAROTENE?

Vitamin A is fat-soluble vitamin which is available in different forms. These different forms are retinoids. These forms include retinol (alcohol), retinal (aldehyde), retinoic acid and retinyl esters. Retinoic acid is unstable one and can be converted into retinol or retinal through reversible reaction.