All the Vitamins and What They Do: A Comprehensive Guide to Vitamin Functions
Vitamin A 🥕👁️ Vitamin A is a fat-soluble nutrient that quietly supports sharp vision, a resilient immune system, and healthy cellular differentiation. When you think about keeping your eyes and skin in top shape, you’re thinking about the everyday work of vitamin A and its metabolites. This section breaks down what it does, how much you need, and where you can reliably find it in foods. Roles Vision support is one of the most well-known roles, with retinal forms contributing to normal retina function and dark adaptation. Beyond sight, vitamin A helps regulate gene expression and supports immune defense by maintaining mucosal barriers and modulating immune cell activity. Adequate vitamin A acts as a regulator for growth and repair, particularly in rapidly renewing tissues; see health vitamins: a comprehensive guide to choosing, using, and understanding vitamins supplements . Experts emphasize that maintaining balance is critical: insufficient vitamin A undermines imm...