What is the meaning of vitamin A?

Vitamin A is a fat-soluble vitamin essential for various bodily functions, including vision, immune system performance, and skin health. It exists in two primary forms: preformed vitamin A (retinol), found in animal products, and provitamin A carotenoids, found in plant-based foods. Vitamin A plays a crucial role in maintaining healthy vision, particularly in low light, and is vital for cell growth and differentiation. Deficiency can lead to serious health issues, including vision problems and a weakened immune response.