"The Whole30: The 30-Day Guide to Total Health and Food Freedom" by Dallas Hartwig and Melissa Hartwig Urban is a hardcover book published by HarperCollins in 2015. It is a guide that offers a step-by-step plan to break unhealthy habits, reduce cravings, improve digestion, and strengthen your immune system. The book features over 100 recipes using familiar ingredients, from simple one-pot meals to complete dinner party menus. With a focus on health and nutrition, this book is perfect for those looking to transform their relationship with food and achieve a healthier lifestyle in just 30 days."