Small vitamins, the role is not simple, but the demand is not large, but it is necessary for the human body. Without them, it is really impossible.

Vitamin C is the most frequently mentioned vitamin, and it is also the most needed vitamin for human body. Also called ascorbic acid, because it has the function of preventing and treating scurvy. In the history of ancient navigation, due to the lack of fresh vegetables and fruits, the crew relied on pickled food as food, and it was easy to get septicemia without vitamin C supplementation for a long time. During Columbus' discovery of America, most sailors died of septicemia. At present, there are few typical scurvy, only atypical latent scurvy, and the symptoms are mainly lethargy, fatigue and bleeding gums.

1. Prevention of scurvy Vitamin C deficiency will prevent collagen from being synthesized normally, and lack of nutrition in capillary endothelium will lead to cell connection disorder, which will increase capillary fragility, thus causing skin and submucosal bleeding. Vitamin C can not only prevent scurvy, but also promote wound healing.

2. Detoxification Vitamin C can be used as an antioxidant to protect other antioxidants, such as vitamin A, vitamin E, unsaturated fatty acids, etc., to prevent free radicals from harming the human body. Vitamin C can prevent poisoning and drug allergy. It has a strong reducing ability and can neutralize almost any substance. If the intake is large enough, it can also be combined with heavy metals, benzene and carbon tetrachloride to remove the toxicity of these substances.

3. Prevention and treatment of iron deficiency anemia For trivalent iron salts that are difficult to absorb, vitamin C can reduce them to divalent iron salts, promote the absorption of iron in the intestine, improve the utilization rate of iron in the liver, and help prevent and treat iron deficiency anemia.

4. It can improve human immunity. White blood cells are the best immune cells in human body. White blood cells are rich in vitamin C. When the body is infected, the vitamin C of white blood cells decreases sharply. Vitamin C can enhance the chemotaxis and deformability of neutrophils and improve their bactericidal ability. Supplementing vitamin C when catching a cold can effectively help fight the virus and promote faster recovery.

5. Slow down skin aging Vitamin C can promote the synthesis of collagen, promote metabolism, increase skin elasticity, and resist the damage of sunlight and ultraviolet rays to the skin. For scars on the skin, it also has a certain desalination effect. It has certain relieving effect on vitiligo.

6. Prevention of atherosclerosis Vitamin C can promote the conversion of cholesterol into bile acids, help prevent the oxidation of low-density lipoprotein cholesterol and prevent the formation of atherosclerosis.

Vitamin C cannot be synthesized by its own chemical reaction in human body, which is one of the remarkable differences from other organisms. Therefore, vitamin C supplement must rely on foreign food supply. If you lack these foods for a long time, it will lead to the lack of vitamin C. All kinds of common vegetables and fruits are rich sources of vitamin C, among which kiwi fruit has the highest vitamin C content and is called the king of vitamin C. No matter what age, people should have a balanced diet, and all kinds of vegetables and fruits should be ingested to ensure the adequate supply of vitamin C. Generally speaking, if they eat normally, it is not necessary to supplement medicinal vitamin C.

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