What are the two main types of Vitamin A?

Vitamin A exists primarily in two main forms: retinoids and carotenoids.

Retinoids are the animal-derived forms of Vitamin A, which include compounds such as retinol and retinal. These forms are readily absorbed by the body and play essential roles in processes such as vision, immune function, and skin health.

Carotenoids, on the other hand, are plant-based pigments found in fruits and vegetables, and they can be converted into retinoids in the body. Beta-carotene is the most well-known carotenoid and serves as a precursor to retinol. The body relies on carotenoids both for their potential antioxidant properties and their ability to be transformed into retinoids as needed.

The distinction between these types is significant because they come from different dietary sources and contribute to vitamin A activity in complementary ways. Understanding this relationship is important for proper nutrition and health.