Vitamins are organic molecules that are important to an organism in small quantities for proper metabolic function. Vitamins allow your body to grow and develop. Vitamins play important roles in body functions such as metabolism, immunity, and digestion. Important nutrients cannot be synthesized in the organism in sufficient quantities for survival and therefore must be obtained through a balanced diet. There are 13 essential vitamins, including vitamins A, C, D, E, K, and B vitamins such as riboflavin and folate. The best way to meet your vitamin needs is to eat a balanced diet containing a variety of foods.
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13.5.1 Sources and functions of vitamins
1. Vitamin A
Sources: Carrots, sweet potatoes, spinach, kale, apricots, eggs, liver, and dairy products. Function: Supports vision, immune function, and skin health.