National Geographic : 1976 Aug
Bran may be the richest source of food fiber in the American diet. Foodfiber'simportanceto our nutrition is rapidly gaining recognition.But we've knownfor years that Kellogg'sfiber-rich cereals help the digestive system regulate itself. Sources offiber. Generally speaking.food fiber is found in fruits. vegetables,and whole grains. But many Americans don't eat thesefoods in quantity anymore. So while there are many Americanfoods with somefiber content, there arefew that arefiber-rich. Kelloggs All-Bran® and Bran Buds®are an exception,for bran is one of natures richest sources offoodfiber. How much fiber is enough? The clinical evidence isn't in. But what we do know so iericansaren't loughfiber in nal diet. e concerned dfiber and Ith. consider Bran. the outerlayer of the wheat kernel, is one of nature's richest sourcesoffiber.