Vitamin C, a substance that is both a nutrient and a "toxic".
Vitamin C plays an important physiological function in the human body and plays a key role in maintaining good health. , we should pay attention to the intake of enough vitamin C to maintain good health. However, excessive intake of vitamin C may also lead to toxic effects.
1. Physiological function of vitamin C.
1.Prevention and alleviation of iron deficiency anemia: Vitamin C can reduce ferric ions in food to ferric ions, promote the absorption of iron ions in the intestine, and help prevent and alleviate iron deficiency anemia.
2.Helps maintain the normal function of bones and teeth: Vitamin C is an acidic compound that forms an acidic medium in the body, promotes the body's absorption of calcium, helps the deposition of calcium in teeth and bones, and helps maintain the normal growth and development of bones and teeth.
3.Reduce free radical damage: Vitamin C has certain antioxidant properties, helping to inhibit the formation of free radicals, tyrosinase and other harmful substances in the body, which is beneficial to the body.
4.Enhance the stress ability of immune cells: It can prevent and ** colds and other acute and chronic infectious diseases or other diseases.
5.Improve the metabolism of fats and lipids, especially cholesterol: prevent heart disease and reduce the risk of coronary heart disease.
6.Promote the metabolism of tyrosine and tryptophan in amino acids: effectively prolong the life of cells and muscles.
7.Promote collagen biosynthesis: help tissue wounds heal faster.
8.Improves the utilization of iron, calcium, and folic acid: prolongs the life of the body.
9.Protects cells from radiation damage: There is a significant positive correlation between vitamin C levels in the body and fertility.
10.It can reduce the standardized mortality rate of various diseases: the effect is more pronounced in men.
Overall, vitamin C plays an important physiological function in the human body and plays a key role in maintaining good health.
2. The harm of excessive intake of "vitamin C".
1.Gastrointestinal system: Vitamin C tablets are a water-soluble vitamin, which can be used to prevent scurvy, and can also be used as an auxiliary for acute and chronic infectious diseases and purpura**, but if used in excess, it is likely to cause gastrointestinal adverse reactions, such as nausea and vomiting, and may also increase the chance of gastritis or gastric ulcers.
2.Urinary system: Excessive use of vitamin C tablets may also lead to impaired excretion of oxalic acid and uric acid in the urine, which will increase the amount of uric acid in the urine, which will increase the risk of gout.
3.Nervous system: Eating too much vitamin C tablets may cause nerve damage, resulting in neurasthenia or nervous exhaustion.
4.Interfere with the efficacy of other medications: Excessive consumption of vitamin C can reduce the effectiveness of certain medications, such as antibiotics, iron, etc.
5.Increase the burden on the kidneys: After excessive intake of vitamin C, a large amount of vitamin C metabolites are excreted from the body, which increases the burden on the kidneys and affects kidney health.
Therefore, when taking vitamin C, follow the standard dosage and do not overdo it. In general, adults need 60-100 mg of vitamin C per day. Vitamin C should be used with particular caution in people with conditions such as kidney disease, gout, iron hyperabsorption, etc.