As one of the most required nutrients for the human body, Vitamin C has antioxidant properties and enhances immunity. It promotes the formation of antibodies, enhances the phagocytic ability of white blood cells, and improves resistance to diseases, as well as tolerance to cold, thereby strengthening the body’s immune function.In the human body, Vitamin C has various functions, among which the most important include antioxidant, anti-inflammatory, antiviral, antibacterial, and collagen synthesis, all of which are fundamental conditions for maintaining health, as combating diseases is closely related to these factors.
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Effects of Vitamin C:
1. Collagen Synthesis
The human body is composed of cells, which are connected by the extracellular matrix, a key component of which is collagen. Collagen accounts for one-third of the body’s proteins, forming connective tissues that constitute the body’s framework, such as bones, blood vessels, and ligaments, determining skin elasticity, protecting the brain, and aiding in wound healing.
2. Prevention of Scurvy
The strength of blood vessel walls is closely related to Vitamin C. Capillaries are the smallest blood vessels, with walls that may be only one cell thick, and their strength and elasticity are determined by collagen. When Vitamin C is insufficient, capillaries are prone to rupture. Therefore, a deficiency in Vitamin C can lead to bruising and purpura on the skin; internally, it can cause pain and joint swelling. In severe cases, bleeding may occur in the stomach, intestines, nose, kidneys, and beneath the periosteum.
3. Gum Recession and Bleeding
Healthy gums tightly surround each tooth. Gums are soft tissues that can easily recede and bleed when lacking protein, calcium, and Vitamin C.
4. A Strong Water-Soluble Antioxidant
It can reduce and protect other antioxidants, such as Vitamin A, Vitamin E, and unsaturated fatty acids, preventing free radicals from harming the body.
5. Prevention of Anemia
Vitamin C reduces trivalent iron, which is difficult to absorb, to divalent iron, promoting intestinal absorption of iron and increasing the liver’s utilization of iron, helping to prevent iron-deficiency anemia..
6. Protecting Cells, Detoxifying, and Protecting the Liver
In human life activities, ensuring the integrity of cells and normal metabolic processes is crucial. For this purpose, glutathione and enzymes play important roles. Glutathione is a short peptide composed of glutamic acid, cysteine, and glycine, which has redox functions in the body. It exists in two forms: oxidized and reduced, with the reduced form playing a vital role in maintaining cell membrane integrity.
Vitamin C is a strong antioxidant that gets oxidized itself, reducing oxidized glutathione back to its reduced form, thereby exerting its antioxidant effects. Enzymes are catalysts for biochemical reactions, and some enzymes require free thiol groups (-SH) to maintain their activity. Vitamin C can reduce disulfide bonds (-S-S) to -SH, thereby enhancing the activity of related enzymes and exerting antioxidant effects.
In summary, as long as Vitamin C is sufficient, it forms a powerful antioxidant combination with glutathione and -SH, clearing free radicals, preventing lipid peroxidation and the toxic effects of certain chemicals, protecting the liver’s detoxification capacity and normal cell metabolism.
7. Enhancing the Body’s Immunity
White blood cells contain abundant Vitamin C, which decreases sharply when the body is infected. Vitamin C can enhance the chemotaxis and deformability of neutrophils, increasing their bactericidal ability. It promotes the generation of lymphoblasts, enhancing the body’s recognition and destruction of foreign and malignant cells. It participates in the synthesis of immunoglobulins, increases the activity of complement CI esterase, and promotes the production of complement CI. It stimulates the production of interferon, interferes with the transcription of viral mRNA, and inhibits viral proliferation.
8. Enhancing the Body’s Stress Resistance
When the human body is subjected to abnormal stimuli, such as severe pain, cold, hypoxia, or intense mental stress, it triggers a tense state to resist these stimuli. This state is accompanied by a series of reactions, including sympathetic nervous system excitation and increased secretion of adrenal medulla and cortex hormones. The adrenaline and noradrenaline secreted by the adrenal medulla are derived from the conversion of tyrosine, a process that requires the participation of Vitamin C.
Who is Prone to Vitamin C Deficiency?
1. People with long-term digestive disorders and prolonged diarrhea;
2. People with unbalanced nutrition, such as those who do not eat fruits and vegetables for extended periods; or those whose vegetables are overly processed, leading to significant destruction of Vitamin C;
3. Drug interactions, such as tetracycline, estrogen, calcitonin, and adrenal cortex hormones, can easily affect the metabolism of Vitamin C in the body, leading to deficiency;
4. Infants who do not receive vitamin C-rich complementary foods are also likely to show signs of Vitamin C deficiency; 5. Infants and premature babies grow rapidly and have a higher demand for Vitamin C; if normal dietary intake cannot meet this demand, Vitamin C deficiency is likely to occur.
6. People under significant stress; high work pressure not only increases the body’s consumption of Vitamin C but also leads to the secretion of the stress hormone cortisol.
7. Smokers; long-term heavy smokers are prone to Vitamin C absorption disorders, exacerbating Vitamin C deficiency in the body.
8. People with high levels of physical activity; intense exercise increases Vitamin C consumption, and sweating during exercise can also lead to the loss of some Vitamin C.
9. People with iron-deficiency anemia.
10. People with osteoporosis.
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