ELISA ZIED, M.S., R.D., is a registered dietitian, a national spokesperson for the American Dietetic Association, and the coauthor of So What Can I Eat?! Her work has appeared in Weight Watchers magazine and in Seventeen magazine, where she was a contributing editor. Zied is frequently quoted in national publications and she appears regularly on CBSa s The Early Show. Visit her Web site at elisazied.com. RUTH WINTER, M.S., is an award--winning science and nutrition writer. Her books include A Consumera s Dictionary of Food Additives. Visit her Web site at brainbody.com.