1. How do humans know that selenium is an essential trace element in life activities?
In 1957, humans discovered that selenium was a protective factor against nutritional liver necrosis, which was a milestone in human understanding of selenium, and people began to explore the mysterious selenium; In 1973, selenium was found to be a component of glutathione peroxidase, and the World Health Organization announced that selenium was an essential trace element for human body; In 1980, the Chinese announced to the world that selenium could effectively control Keshan disease. In 1988, the Chinese Nutrition Society listed selenium as one of the daily dietary nutrients. People should eat enough selenium every day, just as they must eat sugar and protein every day, in order to maintain the balance of nutrients in the body.
2. Why does the Chinese Nutrition Association list selenium as one of the 15 daily dietary nutrients?
Selenium deficiency in soil → selenium deficiency in plants → selenium deficiency in animals, it is difficult for people living in selenium deficient areas to obtain enough selenium through food. China is a country seriously deficient in selenium. 72% of the regions are deficient in selenium, and 30% of the regions are seriously deficient in selenium. As one of the essential trace elements for human body, the function of selenium is highly valued by mankind. Among all trace elements, only selenium holds a special International Conference every four years. Therefore, the Chinese Nutrition Society lists selenium as one of the 15 daily dietary nutrients, which is specially recommended. Each person must consume 50-250 micrograms of selenium per day.
3. What effect does selenium have on healthy people?
According to the function of selenium, after taking selenium, normal people can regulate and strengthen the body's immunity, remove toxins in the body, eliminate the damage of free radicals, repair tissue cells, soften blood vessels, clean up the cholesterol in the blood vessel wall, improve the blood circulation channel, delay the aging process, and prevent a variety of diseases. If you live in a polluted environment, you need to supplement selenium.
4. Do people need selenium for life?
Selenium, like other nutrients, participates in the metabolism of the human body and will be continuously converted, utilized and excreted by the body. Selenium is also an element that is easy to excrete, so we must ingest enough selenium every day to maintain the normal metabolism of the body. Especially people living in a low selenium environment should pay more attention to constantly replenishing enough selenium. Once selenium supplementation is stopped, the ability to defend against diseases will be reduced.
5. There are many products to improve immunity. How is selenium different in improving immunity?
There are a wide range of products on the market to improve immunity. They all improve immunity by supplementing nutrition and balancing nutrition. Human aging and disease are related to oxidative damage and invasion of harmful substances. Selenium can improve human immunity through detoxification, detoxification and elimination of free radicals around cells. Selenium supplementation should be the most direct and fastest way to improve human immunity.
6. Can selenium supplementation improve the growth and development of malnourished children?
Clinical studies have found that the selenium content in the blood of malnourished children is very low. If these children are only provided with high-quality meals such as protein without adding enough selenium, their growth and development will not be significantly improved. Only adding enough selenium can have a good effect. Therefore, selenium supplementation for children is conducive to growth and development.
7. What effect does selenium deficiency in pregnant women have on the fetus?
Selenium is the material basis of human body. It widely exists in human tissues and organs. Human beings need selenium from the beginning of embryonic development. If the mother is short of selenium, the fetus will be short of selenium, which will affect the normal development of the fetus, and may lead to fetal malformation, dysplasia and other conditions. Therefore, pregnant women especially need selenium supplementation.
8. How to find a good selenium source?
Selenium is divided into inorganic selenium and organic selenium. Inorganic selenium is represented by sodium selenite. Some drugs and selenium rich foods (such as selenium rich salts) are added with sodium selenite. Inorganic selenium is chemically synthesized and absorbed quickly, but there are many impurities with low utilization rate and poor long-term safety. If the consumption is not well controlled, it will also affect the absorption of other elements and even produce antagonism. Organic selenium is divided into malt selenium, seaweed selenium, yeast selenium, fungus selenium, etc. the organic selenium transformed by plants absorbs the essence of plants and has a broader nutritional value and health care function. The absorption of organic selenium is slow and the utilization rate is high. Organic selenium is safe and has no toxicity and accumulated toxicity after clinical testing by the Academy of Military Medical Sciences. Therefore, when choosing selenium health products, we should try to choose natural organic selenium with pure purity and high utilization rate.
9. Can diabetes patients stop taking hypoglycemic drugs when taking selenium?
Selenium supplementation has a strong adjuvant treatment function for patients with diabetes, and can gradually restore the function of islet glands. Selenium has a similar effect with insulin, which can regulate blood glucose and improve the symptoms of diabetes. However, even so, diabetics cannot stop and change their medicine at will, otherwise it is easy to cause blood sugar rebound and cause danger in serious cases. Therefore, selenium supplementation in the treatment of diabetes needs to be carried out on the basis of the original treatment, and then gradually reduce the dosage of other drugs when all indicators reach normal.
Low selenium is easy to cause damage to pancreatic function, decreased insulin secretion and abnormal glucose tolerance. According to clinical observation, the blood selenium level of patients with diabetes is significantly lower than that of healthy people. Diabetes is not terrible. The terrible thing is the complications of diabetes. Selenium can effectively prevent the complications of diabetes. Patients with diabetes should adhere to long-term selenium supplementation.
10. What is microcirculation? What damage will obstacles cause to people? Can taking selenium improve microcirculation in human body?
The blood vessels of the human body are the pipes for transporting blood. The large blood vessels, such as arteries and veins, are like a river with many tributaries. The body transmits various nutrients to tissue cells through the joint action of the river and tributaries. Blood passes through the large blood vessels to reach the widely distributed capillary network for human blood circulation. This part of blood circulation outside the large blood vessels is called "microcirculation".
The material exchange between blood and tissues is realized through the function of microcirculation. When the cells on the capillary network are damaged, the microcirculation function changes, hindering the exchange of nutrients and other substances, and the normal function of tissues and organs will be seriously affected, which is bound to lead to disease and body aging.
When the blood selenium level in human body decreases, the function of scavenging free radicals decreases, and too many harmful free radicals will lead to peroxidation damage of microcirculation. Selenium supplementation can improve microcirculation function and prevent various diseases caused by microcirculation damage.
11. Is selenium intake related to cancer?
In 1997, the World Health Organization conducted a worldwide survey on the relationship between selenium intake and cancer mortality in 27 countries, and found that dietary selenium intake was negatively correlated with the mortality of colon cancer, rectal cancer, prostate cancer, breast cancer, lung cancer and leukemia. After the publication of the survey results, American women began to pay attention to improving their blood selenium levels to prevent breast cancer. Within a few years, the incidence rate of breast cancer in the United States was greatly reduced. Therefore, the U.S. Government recommends that each person take 200 micrograms of selenium per day to prevent cancer.
12. Why does tumor tissue accumulate a lot of selenium?
When tumor cells appear in the human body, the human body's defense system mobilizes selenium for tumor cells. Mitochondria in tumor cells are one of the main parts of selenium. Selenium weakens the proliferation of tumor cells in vivo, controls the growth and differentiation of tumor cells, and has no adverse effects on normal cells in the human body. The reason why tumor tissues accumulate a large amount of selenium is that the body plays the anti-cancer function of selenium.
13. Is selenium related to cataract?
Selenium has the function of protecting visual organs. During the growth and development of human body, the selenium content in lens increases slowly. It has been observed that people with selenium deficiency are prone to cataract, and the selenium content in the lens of cataract patients is only about 1/6 of the normal value. Selenium supplementation can timely remove the peroxide in the lens, so that the peroxide does not accumulate, so as to achieve the purpose of protecting the lens. Therefore, the elderly can prevent cataract by supplementing 50~150 micrograms of selenium every day.
14. Why is selenium a natural antidote?
As a negatively charged non-metallic ion, selenium can combine with positively charged harmful metal ions in organisms to form a metal selenium protein complex. Selenium antagonizes toxic substances and plays the role of detoxification and detoxification. Therefore, selenium has won the reputation of "natural antidote".
15. When taking selenium, take it with hot water. Will the composition change?
It is proved by examples that the antioxidant effect of selenium in 100 ℃ boiled water remains unchanged, but vitamins and other nutrients in organic selenium will be affected and destroyed to a certain extent with the rise of water temperature. Therefore, when taking organic selenium, the water temperature should be 50-80 degrees.
16. When is the best time to take selenium products?
There is no strict regulation on the time of taking selenium, but it is better to take it on an empty stomach. For patients with diabetes, it is best to take it half an hour before meals; For tumor patients undergoing radiotherapy and chemotherapy, they should take it one week in advance to reduce the toxic and side effects of radiotherapy and chemotherapy.
17. Can selenium be taken with drugs? Do you still need selenium after recovery?
Selenium, taken together with drugs, not only has no antagonistic effect, but also strengthens the effect of drugs. It can also eliminate the toxic substance peroxide produced in the biochemical reaction of drugs and reduce the toxic and side effects of drugs.
Long term quantitative supplementation of organic selenium has no side effects, and it can timely supplement selenium in the body, improve immune function and maintain body health. Therefore, it can continue to be used after recovery.
Countries with developed health care medicine, such as the United States and Japan, are advised to supplement 50-200 micrograms of selenium every day, whether sick or not, as a way to eliminate diseases and strengthen the body.
18. Can I use selenium before drinking?
Moderate drinking is good for health. Alcoholism has many disadvantages but no benefits. The damage of alcoholism to the body is multifaceted, especially to the liver. Taking 200 micrograms of selenium before drinking can reduce the damage of ethanol to the body and protect the liver; If you drink too much, you can take 400 micrograms of selenium at one time to reduce the damage of ethanol to hepatocytes and help restore the normal function of the liver.
19. Can selenium and vinegar be eaten together?
There is no conflict between selenium and vinegar. For patients with diabetes, if selenium and vinegar are taken together, about 1/3 of patients' blood glucose decreases significantly.
20. Can selenium be taken with tea?
Drinking tea has always been loved by the public in China, but it is common sense in our life that we generally cannot take it with tea when taking medicine. Selenium can be drunk with tea. Phenols, flavonoids and other substances in tea have antioxidant effects, and they have synergistic effects, which is more conducive to human health.
21. Why do you need selenium supplements after moving into your new home?
Our relatives and friends often complain that after moving into a newly decorated home, they become easily ill. Why is this? This is because when we decorate our new house, we use a large number of paints and coatings. During their drying process, they will constantly release a large number of peroxides, that is, free radicals. After we live in the new house, these free radicals are sucked into the body through the respiratory system, which reduces the immune function of the body, so that we are prone to disease.
It should be noted that even if you use green paints and coatings, they will also produce free radicals during the drying process. Therefore, Dr. selenium suggests: 1 Maintain indoor ventilation and reduce indoor free radical concentration; 2. Supplement 200 micrograms of selenium every day to quickly remove free radicals in the body.
22. Why can selenium supplementation promote calcium absorption?
In real life, what is the one thing that each of us has to do before going to bed at night and after waking up in the morning? Clean and wash your face first, and then rub oil to maintain your skin. Similarly, the human body should timely remove harmful substances around cells, such as harmful heavy metals, free radicals, etc., in order to facilitate the absorption and utilization of various nutrients. For example, some people have been supplementing calcium, but they are still lack of calcium. It is because the lead in the body exceeds the standard, which antagonizes calcium and affects the absorption of calcium. As the saying goes, "calcium supplement without lead discharge is equal to wasting money." Selenium supplementation can discharge lead and promote the absorption of calcium.
