Vitamin is defined as a natural substance that is usually found in foods and that helps your body to be healthy. Vitamins allow your body to grow and develop. They also play important roles in bodily functions such as metabolism, immunity and digestion. There are 13 essential vitamins, including vitamins A, C, D, E, and K and B vitamins. Paleo, Vitamins, Detox, Health Tips, Healthy Recipes, Health Fitness, Nutrition, Health, Protein