维生素知识（Vitamin knowledge）.docVIP

维生素知识（Vitamin knowledge） In popular terms, vitamins, that is, the maintenance of life, is to maintain human life activities must be a kind of organic substances, but also to maintain human health an important active material. Vitamin content in the body is very small, but indispensable. Vitamins are natural chemicals that are found in food and cannot be manufactured by the body. As one of the seven essential nutrients in human body, what roles do different vitamins play in the human body? What symptom does vitamin lack be able to produce, what disease is easy to happen? The most important role of vitamin C is antioxidant, lack of vitamin C can lead to low immunity, easy to illness, long-term lack may increase the risk of tumor. Adults add 100 mg of vitamin C a day to the bodys needs. To 100 grams of fruit vitamin C content to calculate, kiwi contains 420 mg, fresh jujube contains 380 mg, orange contains 30 mg, persimmon contains 30 mg. In vegetables, sweet pepper contains 72 mg, cauliflower contains 61 mg, bitter gourd contains 56 mg, broccoli contains 51 mg, and tomato contains 20-30 mg. Vitamin E can promote the bodys metabolism, enhance the bodys endurance, improve immunity. In addition, it is also an effective antioxidant, can improve the blood circulation of the skin, enhance skin cell vitality and anti-aging effect, if combined with vitamin C, the two can complement each other and enhance its role. Vitamin E deficiency can cause dry, rough and over aging skin. Foods rich in vitamin E are mainly peanuts, walnuts and other nuts and food and lean meat, milk, eggs, malt, sesame and so on. In general the diet of vitamin E can fully meet the daily needs of the human body, so try not to take vitamin E, particularly the elderly, long-term use of vitamin E is not only unnecessary, but also unsafe, but also cause side effects. If you need special supplements, it is recommended to proceed under the guidance of a doctor. Vitamin D is a kind of special ability, is in the s