Bessel van der Kolk is a Boston-based Dutch-American psychiatrist, author, researcher and educator.

Kristin Neff, Ph.D., is an Associate Professor of Educational Psychology at the University of Texas at Austin and a pioneer in self-compassion research, having conducted the first empirical studies in the field. She is the author of Self-Compassion: The Proven Power of Being Kind to Yourself (William Morrow, 2011) and co-founded the nonprofit Center for Mindful Self-Compassion (CMSC).

Peter Attia is a Canadian-American author and former researcher known for his work in longevity medicine.

Christopher McDougall is an American author and journalist.

Michael Herschel Greger is an American physician, author, and speaker on public health issues best known for his advocacy of a whole-food, plant-based diet, and his opposition to animal-derived food products.

Gene Stone is an American writer and editor known for his books on animal rights and plant-based food..