E. It was discovered in 1817 and takes its name from the Greek for moon because of its pale colour. High levels can be found in meat, fish, grain and Brazil nuts. However, selenium levels in grain depends on the soil where it is grown. Antioxidants have been shown to protect against a wide spectrum of diseases. They include flavonols which are found in thick-skinned fruit and vegetable and have been credited with protecting against everything from Alzheimer's to heart disease.
Antioxidants mop up free radicals.
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