Vitamin C, also known as ascorbic acid, is a water-soluble vitamin. Vitamin C is involved in a variety of reactions in the body, such as participation in redox processes, and plays an important role in biological oxidation and reduction as well as cellular respiration. Vitamin C health role at a glance: 1, synthesis of collagen: the body consists of cells, cells rely on the intercellular matrix to link them together, the key component of the intercellular matrix is collagen. Collagen accounts for 1/3 of the body’s protein, generating connective tissue and forming the body’s skeleton. Such as bones, blood vessels, ligaments, etc., determine the elasticity of the skin, protect the brain, and help the body heal from wounds. 2, anti-scurvy: the strength of the blood vessel wall and VC have a great relationship. Microvasculature is the tiniest of all blood vessels, and the wall may be only the thickness of one cell, and its strength and elasticity are determined by collagen. When there is not enough VC in the body, microvessels tend to rupture. Therefore, vitamin C deficiency produces bruises and purple spots on the skin surface; in the body, it causes pain and joint pain. In severe cases, bleeding can occur in the stomach, intestines, nose, kidneys and under the periosteum. 3, gum recession, bleeding: a healthy dental bed tightly wrapped around each tooth. Gums are soft tissue, when lack of protein, calcium, VC easy to produce gum recession, bleeding. 4.Prevent atherosclerosis: It can promote the excretion of cholesterol and prevent the deposition of cholesterol in the inner wall of arteries. 5, is a water-soluble strong antioxidant: can restore protection of other antioxidants, such as vitamin A, vitamin E, unsaturated fatty acids, to prevent the damage of free radicals on the human body. 6, treatment of anemia: make it difficult to absorb and use the trivalent iron reduction to divalent iron, promote the absorption of iron in the smooth tract, improve the utilization of iron by the liver, help treat iron deficiency anemia. 7, cancer prevention: rich collagen helps prevent the spread of cancer cells; the antioxidant effect of VC can resist the damage of free radicals on cells to prevent cell mutation; block nitrite and secondary amines to form strong carcinogenic nitrosamines. Some people have autopsied patients who died of cancer and found that the VC content in the patient’s body was almost zero. 8.Protection of cells, detoxification and protection of liver: In human life activities, it is vital to ensure the integrity of cells and normal metabolism. For this purpose, glutathione and enzymes play an important role. Glutathione is a short peptide composed of glutamic acid, cystine and glycine, which has a redox effect in the body. It exists in two forms, oxidized and reduced, with the reduced form playing an important role in ensuring the integrity of cell membranes. VC is a strong antioxidant, which is oxidized by itself and reduces oxidized glutathione to reduced glutathione, thus exerting antioxidant effects. VC can reduce disulfide bond (-S-S) to -SH, which can improve the activity of related enzymes and play the role of antioxidant. In summary, as long as VC is sufficient, then VC, glutathione and -SH form a powerful antioxidant combination to remove free radicals, stop lipid peroxidation and the toxic effects of certain chemicals, and protect the detoxification capacity of the liver and normal cell metabolism. 9, improve the immunity of the human body: white blood cells are rich in VC, when the organism is infected with a sharp decrease in VC in white blood cells. VC can enhance the chemotaxis and deformation ability of neutrophils and improve the bactericidal ability. It promotes the production of lymphoblastoid cells and improves the recognition and killing of foreign and malignant cells by the organism. Participates in the synthesis of immunoglobulins. Improves CI complement esterase activity and increases the production of complement CI. Promote the production of interferon, interfere with the transcription of viral mRNA and inhibit the proliferation of virus. 10, improve the stress capacity of the body: the body is subject to abnormal stimuli, such as severe pain, cold, lack of oxygen, strong mental stimulation, will trigger a state of tension to resist abnormal stimuli. The state is accompanied by a series of body, including sympathetic excitation, increased secretion of adrenal medulla and corticosteroids. The adrenaline and noradrenaline secreted by the adrenal medulla are produced by the conversion of tyrosine, which requires the participation of VC in the subprocess. The vitamin C entering the body is quickly distributed to all tissues and organs, and under normal conditions, the human vitamin C pool is 1500 mg. Most of the excess is excreted in the urine and a small amount in the stool, sweat and respiratory tract. However, in case of infection, the body needs 20 – 40 times more than usual, and all drugs can destroy the VC in the body, so it is very beneficial to supplement the VC when the body is in a state. Dr. Bowling, an American scientist who won the Nobel Prize twice and died at the age of 93, published a book “Vitamin C and the Common Cold” in 1970 based on his years of research. The idea in the book was that taking 1,000 mg or more of natural vitamin C a day could prevent colds; vitamin C could fight viruses. This book was named the best science book in the United States that year. In short, the effectiveness of vitamin C in improving resistance, preventing cardiovascular disease, participating in blood production, and effectively fighting free radicals are very clearly certified. Which groups of people need to increase the intake of vitamin C? 1, people who love smoking and drinking (increase vitamin C consumption by 25~100%); 2, people with poor resistance, including those in the early stage of cold; 3, people with low intake of fruits and vegetables; 4, people who want to whiten and lighten their spots.