Liz Vaccariello has been a health and nutrition journalist for over 20 years. She is the editor-in-chief of Reader's Digest magazine, a position she previously held at Prevention magazine. She is co-author of The Flat Belly Diet!, 400 Calorie Fix, The Digest Diet, and 21-Day Tummy: The Revolutionary Diet That Soothes and Shrinks Any Belly Fast.
Cynthia Sass has a master's degree in nutrition science and public health. She is Prevention magazine's nutrition director and co-author of The Flat Belly Diet!