Co-authors Melissa Hartwig and her husband, Dallas Hartwig, have backgrounds in nutrition and physical therapy. They have used information gleaned from their own clinical practices and from studying medical research to design an eating program that will improve participants’ energy levels, help them lose weight, and make improvements in their overall general health. Their book, It Starts with Food: Discover the Whole30 and Change Your Life in Unexpected Ways, describes their program, the Whole30 and the theories and observations on food and health that led to its creation…