Acute selenium poisoning: daily intake of selenium as high as 400 ~ 800 mg/kg body weight can lead to acute poisoning. It is characterized by abnormal movements and postures, dyspnea, flatulence, high fever, rapid pulse, collapse and death due to respiratory failure.
Chronic selenium poisoning: Chronic selenium poisoning is often due to the intake of 2400 ~ 3000 micrograms of selenium from food every day, and symptoms only appear after several months. It is characterized by hair loss, nail loss, yellowing of skin, bad breath, fatigue, increased susceptibility to dental caries, depression and so on.
Extended data:
The role of selenium:
1, preventing diabetes
Selenium is the active component of glutathione peroxidase, which can prevent the oxidative damage of islet β cells, make them function normally, promote glucose metabolism, reduce blood sugar and urine sugar, and improve the symptoms of diabetic patients.
2. Prevent Keshan disease, Kaschin-Beck disease and arthritis.
Selenium deficiency is the main cause of Keshan disease, Kaschin-Beck disease and two endemic diseases. Selenium supplementation can prevent bone marrow lesions, promote repair, and promote disulfide bond resistance to metal detoxification in protein synthesis. It has good preventive and therapeutic effects on patients with these two endemic diseases and arthritis.
Baidu encyclopedia-selenium supplement
Baidu encyclopedia-selenium