It seems to me that sugar is this year's dietary boogeyman. True, the die-hard anti-gluteneers and a dwindling faction of low-fat zealots are still out there. But, diet fads come in cycles, and all the cool kids are back on the sugar-free bandwagon. Those of us who've spent a lifetime in the diet cycle understand the pull of ingredient-panic, and the virtuous thrill of being able to say, "Oh, I don't eat that anymore. I mean, don't you know it's poison?"