Selenium has a similar function in the human body as the vitamin E: it is part of an enzyme that binds free radicals that are produced by the damage of fatty acids by oxygen. In addition, selenium is involved in the formation of thyroid hormone. Named for its silvery-gray luster after the Greek moon goddess Selene essential trace element was discovered in 1818 by the Swedish chemist Berzelius that it also occurs in the human body was not established until 1975. The stock of selenium in the body is about 10-15 mg; a large part of it is contained in the muscles, as well as in the liver, kidneys and heart. Selenium is taken in the upper small intestine sections and excreted mainly in the urine.
Intake of selenium
Estimates of adequate daily intake are 0.8-1 μg selenium per kilogram of body weight - equivalent to 30-70 μg in adults. This daily dose is z. B. included in
- 10 g trout
- 35 g of herring
- 45 g of tuna
- 90 g pork or chicken liver
- 100 g legumes
- 120 g of nuts
- 350 g of meat
Good sources of selenium are animal and vegetable protein. Especially rich in selenium are offals, meat and fish, cereals, nuts and legumes as well as porcini mushrooms. If you prefer to purchase organic products from the farm - because they do not use sulfur fertilizers, they contain more selenium. In addition, it is recommended to eat foods high in vitamins A, C and E, as these improve the bioavailability of selenium in the body.
- Selenium is an essential trace element that needs to be absorbed through food.
- Rich in selenium is animal protein in pork, offal, fish, but also in nuts and porcini mushrooms.
- Selenium, as a component of protective enzymes, is important for the detoxification of the body.
- As an "antioxidant" it repels free radicals that are produced daily under the influence of environmental toxins, cigarettes and stress.
- Selenium may favorably influence the course of cardiovascular diseases.
- Selenium is used as an adjunct therapy for cancer, impaired immune defense and acute and chronic infections.
- With a blood test, the selenium level can be determined. The test has to be paid by yourself.