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Selenium is conducive for high blood pressure lowering and cancer prevention

When people are becoming more and more careful with the daily nutrition intake, trace element supplement also becomes one important item. You may not be strange with supplementing calcium, iron or zinc, but are you familiar with selenium supplements? Selenium, in nutrition academic circles at home and abroad, is regarded as "the flame of life". Its effect on human health is unparalleled. Selenium has powerful antioxidant functions and good inhibition to high blood pressure, heart disease and even cancer. If the human body faces zinc deficiency, it can indirectly lead to more than 400 kinds of disease. Beans, meat and aquatic food is rich in selenium which we should eat more of.

Selenium is a kind of chemical element. The chemical symbol is Se. It is said that the development of selenium has experienced a long period of "baptism". In 1560, a preacher describes the grain of somewhere in Columbia is of great toxicity. Both animals and human beings appear hair loss after taking the grain. In 1856, A doctor in Omaha, Nebraska in the western United States found that horses feeding on the local grasswill appear hoof falloff or hair loss. About 40 years later, a similar case was found in Wyoming in the United States. These are selenium poisoning cases recorded in the history which make people mistakenly believe that selenium is just kind of toxic elements for human body. Back then, people did not realize selenium is essential trace elements and nor did they know the consequences of selenium deficiency are more serious than selenosis.

Not until May 17, 1957 did human beings begin to realize that selenium is is linked to the healthiness of human body. And this change on human perceptions of selenium is owed to Schwartz, liver disease research scientist in Germany. In his research, he then found sulfur-containing amino acid and vitamin E have very good protection effect on liver. He also found that a part of the mice feeding on yeast are affected with hepatic necrosis while some are not. His further study found that the mice feeding on the brewery yeast are not affected by liver necrosis at all while those who ate yeast that mill produces appeared liver necrosis. He believed that there must be a kind of substance with strong activity in the yeast that can prevent liver necrosis. After years of painstaking research, he finally found a garlic-smelled substance in chromium ethanol extraction which proved to be selenium compounds. This is the first time human find that selenium has strong protection effect over the liver.

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