Zinc mainly exists in marine products and animal offal, and other foods contain little zinc-almost no zinc in water, staple foods and eggs that children like to eat, and not many vegetables and fruits contain zinc. Lean meat, pork liver, fish, egg yolk, etc. Among them, oysters have the highest zinc content. According to laboratory tests, animal foods generally contain more zinc, about 3-5 mg of zinc per 100 grams of animal foods, and amino acids produced after the decomposition of animal protein can also promote the absorption of zinc. There is less zinc in plant food. Every 100 grams of plant food contains about zinc 1 mg. There are beans, peanuts, millet, radish and Chinese cabbage with high zinc content in various plant foods.

Zinc is a kind of trace elements, and its content in human body and daily intake are very small, but it can play a decisive role in the body's sexual development, sexual function and the generation of germ cells, so it is called "the spark of life" and "the harmonious element of marriage". The normal zinc content of human body is 2-3g. A very small amount of zinc is distributed in most tissues, among which the content is high in liver, muscle and bone. Zinc is the main component of dozens of enzymes in the body. Zinc is also related to brain development and intelligence. An American university found that the zinc content of smart and well-studied teenagers is higher than that of dull ones. Zinc can also promote the proliferation and activity of lymphocytes, and has wonderful effects on maintaining the normal epithelial and mucosal tissues, preventing the invasion of bacteria and viruses, promoting wound healing, reducing skin lesions such as acne, and correcting taste failure.

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When zinc is deficient, all systems in the whole body will be adversely affected. In particular, it has a more direct effect on puberty gonadal maturation. When young men in the Nile Delta of Egypt suffer from zinc deficiency, the main manifestations are growth stagnation and hypogonadism. In Iran, studies have confirmed that girls and school-age children have growth stagnation and sexual maturity retardation. After zinc is fortified in food, the development of patients will soon become normal.

Animal experiments have confirmed that the brains of zinc-deficient animals are stunted.

Zinc deficiency in some tissues of the eyeball will affect the photochemical process and make vision abnormal.

Zinc is also a component of insulin. When the zinc in the pancreas drops to half of the normal content, there is the possibility of diabetes.

food source

A balanced diet of normal people can provide about 10-20 mg of zinc for human body every day, but only 2-3 mg can be used. The main substance affecting zinc absorption is plant acid, which is in

Insoluble salts can be formed with zinc in the intestine. A large amount of dietary cellulose also affects the utilization of zinc.

To ensure that there is enough zinc in the body, we should first adjust our diet. The content of available zinc in animal protein foods such as fish, meat, liver, kidney and shellfish.

Are rich, zinc deficiency can be reasonably matched in the diet.

Special use (the role of zinc in sexual activity)

The testicles, prostate and semen of human body all contain high concentrations of zinc. When the content of zinc in human body is deficient, sexual function will be reduced, testosterone synthase will be disordered, and men will cause impotence and acne on their faces. Zinc plays a special role in stimulating sperm motility, and zinc deficiency will lead to the decline of sperm motility. Long-term zinc deficiency and failure to replenish it in time may lead to a significant decrease in sperm count and testicular atrophy, and finally lead to infertility.

According to the World Health Organization, the daily zinc intake of adults is15mg, while that of Chinese men is only about 9mg. Insufficient intake of zinc from food is caused by the following reasons:

First, a large number of chemical fertilizers are applied to the land, and the grown grain is generally deficient in zinc;

Second, after deep processing, the content of zinc in food can be reduced;

Third, drinking and eating sugar also consumes some zinc. It is easy for people to be short of zinc, especially married young men, because they are at the peak of sexual life, that is, when zinc intake is relatively insufficient, they lose a considerable amount of zinc with semen.

Zinc deficiency in human body can be supplemented by adjusting diet in general. Shellfish foods such as oysters, clams, oysters, mussels, etc. all contain more zinc, and in terms of zinc content, oysters are the first to be promoted. Based on the zinc content of 100 grams of food, oysters are 100 mg. Other foods such as animal liver, coarse grains, fish, meat and eggs also contain a considerable amount of zinc, while the content of zinc in fruits is the least.

In a word, zinc plays a leading role in sexual activity and plays an important role in maintaining reproductive function. Therefore, it is suggested that young male friends should drink as little as possible every day and increase the intake of some foods with high zinc content appropriately, so as not to affect your reproductive function. Which male infertility patients need zinc supplementation? As we have mentioned in the relevant content, testicles, prostate and semen are rich in zinc. Because the seminal plasma in semen is mainly secreted by prostate, checking the content of zinc in seminal plasma can be used as an index to monitor prostate function. Researchers have found that zinc plays an important role in maintaining this physiological state during the long pre-fertilization process such as sperm maturation, transportation, movement and capacitation in female reproductive tract. Sperm absorbs zinc from seminal plasma during ejaculation, and combines with sulfhydryl group of nuclear chromatin to avoid premature depolymerization of chromatin, which is beneficial to fertilization. Zinc can also delay the lipid oxidation of sperm membrane, maintain the stability and permeability of cell membrane structure, and keep sperm in good mobility.

In addition, there are many enzymes involved in the process of testosterone synthesis by leydig cells in testis. When zinc is deficient in vivo, the properties and functions of these enzymes will change, which will reduce the amount of testosterone synthesis and secretion by leydig cells in testis.

Male infertility caused by zinc deficiency can be seen in oligozoospermia with reduced sperm number and azoospermia with poor sperm activity rate. Therefore, when encountering the above situation, you can check the zinc content in seminal plasma. If it is the cause of zinc deficiency, you can use zinc supplementation. High-zinc foods, such as oysters and animal liver, can also be used to treat such patients, which can also make them have fertility. Moreover, even if there is no condition to detect zinc content, zinc supplementation with food will not cause adverse effects on the body.

Zinc (Zn) Zinc is a trace element in the body, which is second only to iron, but it was not known until the 1960s that zinc is also an essential nutrient for human body. Zinc is a component of many enzymes. It is said that there are 100 kinds of enzymes containing zinc in human body. In addition, zinc is related to the synthesis of protein and the metabolism of DNA and RNA. Zinc is needed for the transport of carbon dioxide in blood cells, the normal calcification of bones, the development and maintenance of normal function of reproductive organs, the healing of wounds and burns, the normal function of insulin and the keen sense of taste.

Human colostrum is a good source of zinc. The bioavailability of zinc in different foods varies greatly, and the bioavailability of zinc in meat and seafood is much higher than that in vegetables.