Vitamin A. Retinol. Carotenes… wait what? They are the same thing, right? Vitamin A is perhaps one of the most perplexing vitamins (for me at least). The two key forms of vitamin A in the human diet are performed vitamin A and provitamin A. Performed vitamin A, also called retinol or retinyl esters, is found… Continue reading Micronutrient Series: Vitamin A