At a reading in Berkeley last spring, feisty nutritionist and author Marion Nestle fielded questions from an audience of mostly earnest-looking women perched on folding chairs. Several lobbed queries about flaxseed oil and vitamin supplements, wheatgrass and superfoods, but the famously blunt NYU prof squelched them all with a blanket prescription. "Eat food," Nestle said, a quiver of exasperation in her voice. "You don't need anything special. Just... More >>>