Fake Fiber

The label of Welch's 100 percent Grape Juice with Fiber makes it like the fiber comes from unadulterated, natural sources like "whole Concord grape skins and seed." Instead, the Center for Science in the Public Interest points out that the fiber comes from the processed food additive maltodextrin, a starchlike carbohydrate that resists digestion. V8 High Fiber, Sunsweet PlumSmart, and Prune Juice Light pull similar tricks. To get your healthy fiber fix, just eat the actual fruit. It's better for your blood sugar and diabetes risk.