Do su­per­foods re­ally ex­ist?

BBC Earth (Asia) - - Science -

A so-called ‘su­per­food’ has no sci­en­tific def­i­ni­tion and the word is lit­tle more than a mar­ket­ing fad. Fruit and vegeta­bles rich in an­tiox­i­dants, like blue­ber­ries, kiwi fruit and goji berries, of­ten top the su­per­food list. An­tiox­i­dants, such as vi­ta­mins A, C and E, are billed as be­ing able to fight havoc-wreak­ing free rad­i­cals, help­ing to pre­vent can­cer. But ev­i­dence for di­etary an­tiox­i­dants’ ef­fec­tive­ness is sparse, with some stud­ies sug­gest­ing that di­ges­tion de­stroys much of the an­tiox­i­dant power of berries. Plus, the an­tiox­i­dant con­cen­tra­tions needed would re­quire you to con­sume vast quan­ti­ties of your se­lected su­per­foods. How­ever, the foods are all healthy and will en­rich a bal­anced diet. ED

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