Selenium is an essential trace element for human body. Selenium deficiency in human body will lead to many diseases. Studies have proved that proper selenium supplementation can improve immunity, prevent cancer and prevent diseases, delay aging, help sleep, promote brain development, and protect liver, kidney, heart and prostate. It can also be used in beauty beauty, which can be used to treat tumors and cancers in clinic and improve sperm motility. Therefore, we should consume 200 micrograms of selenium every day in our daily life. Selenium can usually be supplemented by selenium-enriched foods, such as selenium-enriched rice and miscellaneous grains. You can learn about Hunan selenium-loving agricultural products through Baidu.