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Scientific Advisory Board

Our Scientific Advisory Board are leaders in their respective fields and provide science and nutrition expertise.

Nutrition Science

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Dr. David Heber M.D. Ph.D

An internist, endocrinologist, physician, nutrition specialist and Professor Emeritus of Medicine and Public Health at the David Geffen School of Medicine at UCLA. Dr. Heber, founded the Division of Clinical Nutrition in the Department of Medicine and established the UCLA Center for Human Nutrition. His primary research interests are obesity treatment and prevention, the role of nutrition, phytonutrients, and botanical dietary supplements in the prevention and treatment of common forms of cancer and cardiovascular disease. He is the author of over 250 peer-reviewed scientific articles, over 50 book chapters, and four professional texts. He has written four books for the public including national best sellers and was listed as a Best Doctor in America from 2001 to 2015 numerous times. He enjoys working out in his home gym, drawing and painting, and reading for pleasure.

Dr. Adam Drewnowski Ph.D.

A world-renowned leader in the study of obesity and social disparities in diets and health. Dr. Drewnowski is the inventor of the Nutrient Rich Foods Index, which rates individual foods based on their overall nutritional value, and the Affordable Nutrition Index, which helps consumers identify affordable healthy foods. He is Professor of Epidemiology and the Director of the Center for Public Health Nutrition at the School of Public Health. He is also the Director of the University of Washington Center for Obesity Research. Dr. Drewnowski’s interests are in characterization of dietary patterns, nutrition economics, spatial distribution of obesity rates and the development of new metrics to identify foods that are nutrient dense, affordable and sustainable.

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Dr. Zhaoping Li M.D.

Dr. Li is a Board Certified Internal Medicine and Nutrition Physician Specialist, Professor of Medicine and Lynda and Stewart Resnick Endowed Chair in Human Nutrition at David Geffen School of Medicine, UCLA. She currently holds the positions of Director of Center for Human Nutrition at UCLA and Chief of Division of Clinical Nutrition at UCLA’s Ronald Reagan Medical Center. She has been Principal Investigator for over 50 clinical trials in the fields of nutrition, obesity and botanical research. She has published more than 200 papers on various academic journals including JAMA, Lancet, and Annals of Internal Medicine. She is a fellow of American College of Physicians and fellow of the American College of Nutrition.

Britt Burton-Freeman Ph.D.

Her research approach exemplifies the mutli-disciplinary nature of nutritional science integrating aspects of nutrition, food science, food chemistry, biochemistry, physiology, microbiology, pharmacology/-kinetics, and behavioral sciences to characterize and understand physiological responses to diet and dietary components in humans during normal, stressed, and pathophysiological states. Her expertise is focused on how cardiovascular health and obesity is influenced by modern day eating patterns and protected by plant foods, which deliver select bioactive phytochemical components, such as flavonoids, fibers, and fats. Recently, her lab’s work has focused on the reciprocal interactions of the gut metagenome with the host genome in response to dietary intake of bioactive plant compounds.

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Donald Keith Layman Ph.D.

Nutritional biochemist and Professor Emeritus in the Department of Food Science and Human Nutrition at the University of Illinois at Urbana-Champaign. He is highly regarded for his research on amino acid metabolism, nutritional requirements during exercise and work with high protein weight loss diets. His area of research focuses on the impact of diet and exercise on adult health problems of obesity, type 2 diabetes and Metabolic Syndrome.

Food Chemistry and Toxicology

Vasilios (Bill) Frankos Ph.D.

In 2010, Frankos retired from FDA, where he served as the director, division of dietary supplements programs, Center for Food Safety and Applied Nutrition (CFSAN). He was FDA’s lead scientist for dietary supplements, responsible for the full implementation of the Dietary Supplement Health and Education Act of 1994 (DSHEA). Previously, Frankos served in several other roles related to toxicological and pharmacological evaluation of data, and was a principal with ENVIRON for over 18 years. He has presented on FDA policies on dozens of occasions. Currently Dr. Frankos is senior vice president for global product science, safety and compliance at Herbalife.

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Guy Crosby Ph.D.

Dr. Crosby (The Cooking Science Guy), has more than thirty years in food-related research. Currently, he teaches food science in the Department of Nutrition at the Harvard T H Chan School of Public Health and is the science editor for Christopher Kimball’s Milk Street. Previously he served as the science editor for America’s Test Kitchen where he co-authored the New York Times best-seller “The Science of Good Cooking” (2012) and Cook’s Science (2016). Most recently he was the sole author of “Cook, Taste, Learn – How the Evolution of Science Transformed the Art of Cooking” published in 2019 by Columbia University Press.

Data Science

Dr. Peter Frazier Ph.D.

Researcher at the interface of machine learning and operations research. Currently an Associate Professor in ORIE at Cornell University. Research Interests interests are in optimal learning: settings where we learn from data that is time-consuming or expensive to collect, requiring that we make good decisions about how to collect it. This spans machine learning, operations research, and statistics. It includes surveillance testing in public health, design of experiments in medicine and materials science, tuning hyperparameters for machine learning models, the design of e-commerce systems, and many other applications. At the moment, Dr. Frazier is on sabbatic leave from Cornell, working as a Staff Data Scientist and Data Science Manager at Uber, where he manages the data science team for uberPOOL.

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Nutrition Practice

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Gregory Hollandsworth, DC

Greg Hollandsworth is a Doctor of Chiropractic and an Assistant Professor at Parker University. He is the lead instructor for the Laboratory and Differential Diagnosis courses in the Clinical Science Department at the University. He holds advanced certifications in nutrition and functional medicine and used this knowledge during his 8 years of clinical experience treating and managing patients. Dr. Hollandsworth is currently working towards the completion of a Master of Science in Teaching in Higher Ed at Texas A&M University. He has presented his work at national and international conferences and is a peer reviewer for ACC-RAC (Association of Chiropractic Colleges – Research Agenda Conference). In his free time, Dr. Hollandsworth enjoys endurance sports, meditation, and spending time with his family.