Dallas Hartwig is a Certified Sports Nutritionist, licensed physical therapist, and functional medical practitioner who specializes in treating lifestyle-related hormonal, digestive, and metabolic health issues. In 2012, he co-authored the New York Times bestselling book It Starts With Food and founded his functional medicine practice, mentoring under Dr. Daniel Kalish and enrolling in the Institute for Functional Medicine's certification program. Dallas has presented more than 200 health and nutrition seminars worldwide, is a member of the PaleoF(x) Advisory Board and Fitwall advisory boards, and provides support and lifestyle recommendations to more than 1.5 million people a month through the Whole30 and Whole9 websites.
Melissa Hartwig is a Certified Sports Nutritionist who specializes in helping people change their relationship with food and create life-long, healthy habits. She is the New York Times bestselling author of It Starts With Food, and has been featured in the Wall Street Journal, Details, Redbook, and Woman's World. Melissa has presented more than 200 health and nutrition seminars worldwide, and shares resources with, writes articles for, and provides support to more than 1.5 million people a month through the Whole30 and Whole9 websites.