Precision Nutrition | Experts and Authors

John Berardi, PhD, is the co-founder of Precision Nutrition. He holds a doctorate in exercise physiology and nutritional biochemistry from the University of Western Ontario and an MS from Eastern Michigan University. Dr. Berardi is also the author of the best-selling book, Change Maker.

Alaina Hardle is Precision Nutrition’s data scientist, bioinformatician, and leader of security and privacy. She earned her bachelor’s degree in molecular and computational biology from Singularity University’s prestigious Graduate Studies Program and is co-author of Genetics: The Universe Within.

Krista Scott-Dixon, PhD, is Precision Nutrition’s director of curriculum. She leads the development of PN’s educational programs and courses, including the PN Level 1 Certification and PN Level 2 Master Class. Dr. Scott-Dixon holds a doctorate in Women’s Studies from York University.

Brian St. Pierre is Precision Nutrition’s director of nutrition. He’s a Registered Dietician and holds an MS in Food Science and Human Nutrition from the University of Maine. St. Pierre is the coauthor of Precision Nutrition’s Level 1 Certification textbook, The Essentials of Nutrition and Coaching.

Helen Kollias, PhD, is Precision Nutrition’s science advisor. She holds a doctorate in Molecular Biology from York University and an MS in Physiology and Biochemistry from the University of Waterloo. Dr. Kollias has taught at the university level and been published in 10 scientific journals.

Craig Weller is Precision Nutrition’s exercise systems and program director and a PN Master Coach. His certifications include US Navy SWCC (Special Warfare Combatant Crewman), Department of State WPPS-2 (Worldwide Personal Protective Service), and NSCA Certified Personal Trainer (CPT).

Ryan Maciel is Precision Nutrition’s head performance nutrition coach—elite athletes and organizations. He’s a Registered Dietitian, a Precision Nutrition Level 2 certified coach (Pn2), and a Certified Strength and Conditioning Specialist (CSCS) through the National Strength & Conditioning Association (NSCA).

Adam Feit, PhD is Precision Nutrition’s head strength and sport psychology coach. Dr. Feit earned his PhD in Sport and Exercise Psychology from Springfield College. He also holds a master’s degree in Exercise Science and Health Promotion from the California University of Pennsylvania.

Ryan Andrews is a principle nutritionist and adviser for Precision Nutrition. He’s a Registered Dietician and holds master’s degrees in both Nutrition and Exercise Physiology from Kent State University and a BS in Exercise Science from the University of Northern Colorado.

MJ Perrier, PhD, is a data scientist and writer at Precision Nutrition. She holds a PhD in Health and Exercise Psychology from Queen’s University and a master’s degree in Epidemiology and Biostatistics from McGill University. She’s also a Precision Nutrition Level 2 certified coach.

Kate Solovieva, MA is Precision Nutrition’s head of community engagement and a PN Master Coach. She holds a bachelor of arts in Psychology from the University of Waterloo and an MS in Social and Personality Psychology from York University.

Alisa Bowman a Precision Nutrition writer and editor. She holds a BA in journalism from Penn State University and certifications in Udana yoga, prenatal yoga, and massage therapy. She has written for Men’s Health, Prevention, and Women’s Health and has collaborated on more than 20 bestselling books.

Adam Campbell is Precision Nutrition’s editor-in-chief. He holds a master’s degree in Exercise Physiology from the University of Kansas and is a Precision Nutrition Level 2 certified nutrition coach. Campbell is also a New York Times bestselling author.

Camille DePutter provides creative and strategic guidance for Precision Nutrition. She holds an honor’s degree in English and Equity Studies from the University of Toronto. DePutter is a coauthor of PN’s Level 1 Certification textbook, The Essentials of Nutrition and Coaching.

Lee Helland is Precision Nutrition’s editorial director. She holds a master’s degree in journalism from New York University and a BA in English Language and Literature from Rutgers. She’s written for SELF, New York, Details, Parents, Martha Stewart Everyday Food, DailyWorth, and NBC’s Today.

Julia Malacoff is a Precision Nutrition writer and editor. She holds a BA in Art History from Wellesley College and is certified as a Level 4 personal trainer through the European Registry of Exercise Professionals (EREPS). Her work has appeared in Shape, Fast Company, Popsugar, and Real Simple.

Dominic Matteo is a Precision Nutrition Level 2 Instructor and PN Master Coach. He’s also a certified personal trainer through the National Academy of Sports Medicine (NASM), and an Institute for Integrative Nutrition Holistic Health Counselor.

Zach Moore is a PN Master Coach who has personally coached more than 1000 clients. He holds an MS in economics from Indiana University and is a Certified Strength and Conditioning Specialist (CSCS) through the National Strength and Conditioning Association (NSCA).

Alex Picot-Annand is a Precision Nutrition writer and PN Level 2 Coach. She holds a BA in Psychology and Spanish from Dalhousie University. She is certified as a life coach and registered as a holistic nutritionist through the Canadian School of Natural Nutrition.