Selenium is a mineral that combats the development of harmful substances in the body. Selenium is important for the liver and thyroid. It protects red blood cells from damage. Selenium is an antioxidant: it protects the cells in the body from free radicals. Free radicals play a role in aging processes.


Selenium is found in almost all foods. Cereals are generally higher in selenium than vegetables. Organ meats (such as liver and kidney), fish and shellfish and Brazil nuts are also high in selenium. In animal products, selenium is often linked to protein. In animal and vegetable products, selenium is found both in organic form and inorganic form. The organic form is better absorbed by the body than the inorganic form.



A shortage of selenium creates an early poor immune system and there may be a disruption of the functioning of the heart muscle.


In case of a surplus of selenium, hair and nails become brittle and loss of hair and nails may occur.