This image released by Vani Hari shows the food blogger among boxes of cereal in Charlotte, N.C. The former management consultant turned healthy-living activist has a best-selling book and an army of supporters. She deploys them regularly to move giants in the food industry via online petitions that, among other things, helped get Kraft Foods to give up artificial dyes in its macaroni and cheese. (Courtesy Vani Hari via AP)
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