What is the group of compounds that make up the vitamin A family called?

The vitamin A family consists of a group of compounds primarily known as retinoids. This group includes several forms of vitamin A that are essential for various physiological functions, such as vision, immune system performance, cell growth, and reproduction. Retinoids include retinal, retinol, and retinoic acid, which are derived from animal sources and are bioactive forms of vitamin A that the body can utilize directly.

While carotenoids, another important group of compounds, are plant-based pigments that the body can convert into active vitamin A (such as beta-carotene), they are not included in the classification of the vitamin A family. Tocopherols, known as vitamin E compounds, and thiamins, which are part of the B vitamin family, do not share any relation with vitamin A.

Therefore, identifying retinoids as the main constituents of the vitamin A group underscores the significance of these compounds in human health and dietary nutrition.