Liz Vaccariello is the editor-in-chief and chief content officer of Reader's Digest, one of the world's largest media brands, with 26 million readers. A journalist with 20+ years experience in health and nutrition, she's also the coauthor of the New York Times bestsellers Flat Belly Diet!, 400 Calorie Fix, The Digest Diet, and 21-Day Tummy Diet. Vaccariello regularly appears on national programs such as Good Morning America and The Doctors, and has been featured on The Biggest Loser, Today, Rachel Ray, and The View. Previously, Liz was the editor-in-chief of Prevention. She lives in New Jersey with her husband and twin daughters. Her blog, Losing it with Liz, lives on rd.com. She has over 3,000 followers on Twitter (@LizVacc). Kate Scarlata, RD, LDN is a registered and licensed dietitian with over 25 years of experience in the nutrition and wellness field, specializing in digestive disorders. Kate completed her postgraduate training at Brigham and Women's Hospital, a Harvard Medical School teaching affiliate. The author of The Complete Idiot's Guide to Eating Well with IBS, she has been interviewed in many national publications, including Ladies Home Journal and Fitness magazine. She lives and practices in Medway, Massachusetts.