Our expert says:
Selenium is a mineral. Because we need such small amounts on a daily basis, it is called a 'trace element'. Selenium helps certain enzymes such a glutathione peroxidase work efficiently to protect the body and boost immunity. The recommended intake in SA is 55 microgram per day. The selenium content of foods can vary a great deal because it is determined by the selenium content of the soil. In some areas of the world the selenium content of the soil is low, which then also lowers the selenium content of fruit, vegetables and grains grown on that soil and ultimately causes selenium deficiencies in the population of that region. Brazil nuts, seafood, organ meats, liver, meat, and poultry are good sources of selenium. Because selenium can also be toxic if taken in high doses, it is important not to overdose on selenium supplements.
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