What is the role and function of vitamin c

The role and function of vitamin c

Vitamin C (Vitamin C, Ascorbic Acid), also called L-ascorbic acid, is a water-soluble vitamin. Vitamin C in food is absorbed by the upper small intestine of the human body. Once absorbed, it is distributed to all water-soluble structures in the body. The metabolic activity pool of vitamin C in a normal adult body is about 1500 mg of vitamin C, and the highest storage peak is 3000 mg of vitamin C. Under normal circumstances, most of the vitamin C is metabolized in the body into oxalic acid or combined with sulfuric acid to form ascorbic acid-2-sulfate and is excreted in the urine; the other part can be directly excreted in the urine.
1. The functions and functions of vitamin C (the editor recommends 999 brand vitamin C): whitening, moisturizing, and firming.
Vitamin C is one of the most important factors in maintaining skin health. It can eliminate dull skin color, restore skin's radiance and firmness, maintain the skin's natural moisturizing function, and effectively eliminate free radicals. How does VC whiten skin? However, because vitamin C is easily oxidized and difficult to preserve, its use in skin care products is quite limited. Many skin care products now chemically treat vitamin C to make it less susceptible to loss. It can also enhance the permeability of the skin, thereby destroying the synthesis of melanin. In this way, the whitening effect can be exerted. Lotion containing vitamin C can directly penetrate the skin and repair the damage and aging caused by ultraviolet rays, so it can whiten the skin and reduce fine lines and dark spots. Recently, high-concentration vitamin C is often used for skin treatment because it can improve the efficacy of treating acne, whitening, etc.
2..The role and function of vitamin C: improve white blood cell function, improve immunity, and prevent colds
White blood cells are rich in VC. When the body is infected, the VC in white blood cells decreases sharply. VC can enhance the chemotaxis and deformation ability of neutrophils and improve their bactericidal ability. Promote the generation of lymphoblasts and improve the body's recognition and killing of foreign and malignant cells. Participate in the synthesis of immunoglobulins
3. The role and function of vitamin C: beneficial to wound healing
Vitamin C is an antibacterial oxidant that has the inflammatory chemotactic effect of protecting cell membranes and subcellular organelles, increasing the body's immune function, and promoting comprehensive tissue repair. All wounds will produce a large amount of oxygen free radicals due to environmental pollution and physical and chemical effects. Oxygen free radicals will increase the permeability of hair cell walls, damage vascular endothelial cells, aggravate ischemia, edema, and hypoxia of adjacent tissues in the injured area, resulting in more A series of secondary injuries such as extensive cell death and tissue dissolution. Vitamin C can participate in the synthesis of collagen and tissue intercellular substance, improve the permeability of capillary walls, not only promote the formation of fresh tissue, reduce exudation, but also promote wound healing.
4. The role and function of vitamin C: increase the body's ability to adapt to temperature changes
When the human body is subjected to abnormal stimulation, such as severe pain, cold, hypoxia, and strong mental stimulation, it will cause a state of tension to resist abnormal stimulation. This state is accompanied by a range of physical, including sympathetic excitation, adrenal medulla, and increased secretion of corticosteroids. Epinephrine and norepinephrine secreted by the adrenal medulla are converted from tyrosine, and this process requires the participation of VC.
5. The role and function of vitamin C: prevent cancer
Anti-cancer. Rich collagen helps prevent the spread of cancer cells; the antioxidant effect of VC can resist free radical damage to cells and prevent cell mutation; it blocks the formation of nitrosamines, a strong carcinogen, from nitrite and secondary amines. Someone once performed an autopsy on a patient who died of cancer and found that the VC content in the patient's body was almost zero.