BCO1 (Beta-Carotene Oxygenase 1): BCO1 is responsible for the conversion of beta-carotene to retinal, a form of vitamin A, which is essential for vision, immune function, and cellular communication. This gene's activity influences how efficiently dietary beta-carotene is converted into vitamin A, impacting vitamin A status and related health outcomes. Variations in BCO1 can affect an individual's response to dietary beta-carotene and risk of vitamin A deficiency....