Vitamin A: Essential Nutrient for Vision and Epithelial Health Vitamins are organic compounds required by the body in trace amounts to perform specific functions. The human body cannot synthesize most vitamins and therefore must obtain them through the diet. Among these essential nutrients, vitamin A plays a crucial role in maintaining healthy vision, epithelial tissues, and supporting growth and development. Understanding Vitamins Vitamins are classified into two main groups based on their solubility: Unlike macronutrients (carbohydrates, proteins, and fats), vitamins …