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All research, training and programs at the Anschutz Health and Wellness Center are be led by the largest, most talented and dedicated interdisciplinary team in the field. The team is led by Dr. James O. Hill, a renowned leader in the fight against the global obesity epidemic.

James O. Hill, PhD
James O. Hill, PhD is the founding executive director of the Anschutz Health and Wellness Center at the University of Colorado Anschutz Medical Campus. He holds the Anschutz endowed chair in health and wellness and is also professor of pediatrics and medicine. More »
Dr. Hill served as chair of the first World Health Organization Consultation on Obesity in 1997 and was president of both the Obesity Society and the American Society for Nutrition (ASN). He helped the NIH develop the first US guidelines for the treatment and prevention of obesity.

Dr. Hill has published more than 500 scientific articles and book chapters and most recently co-authored State of Slim, featuring the Colorado Diet. Many of these focus on the importance of healthy eating and physical activity in weight management. He is the recipient of awards from the Obesity Society, Centrum Center, McCollum and the ASN.

Dr. Hill is a co-founder of the National Weight Control Registry, a registry of individuals who have been successful in maintenance of a reduced body weight. He is co-founder of America on the Move, a national weight gain prevention initiative that aims to inspire Americans to make small changes in how much they eat and how much they move to prevent weight gain.

John Peters, PhD
John Peters, PhD is chief of strategy and innovation at the Anschutz Health and Wellness Center and professor of endocrinology, metabolism and diabetes at University of Colorado. Peters, a leading researcher and strategist in nutrition, obesity and diabetes, is charged with designing and implementing groundbreaking nutrition and health research and programming. More »
Prior to joining the faculty at the University of Colorado in September 2011, he spent 26 years at Procter & Gamble Company in a variety of research and development positions in food and beverage, health care and corporate new business development.

He is also involved in several public health initiatives promoting healthy lifestyle behaviors. He is co-founder and chief executive officer of America on the Move and past president of the International Life Science Institute Center for Health Promotion. Peters has published over 120 scientific papers and reviews and co-authored the book The Step Diet.

Holly Wyatt, MD
Holly Wyatt, MD is an associate professor of medicine at the University of Colorado and a physician, clinical researcher and medical director at the Anschutz Health and Wellness Center. She has extensive clinical experience in weight reduction using behavioral treatment, dietary therapy, physical activity interventions, weight loss medications and surgery. More »
Dr. Wyatt is co-author of the recently published State of Slim that reveals how slender Coloradans get and stay that way using the revolutionary Colorado Diet. As medical director of ABC’s Extreme Weight Loss show, she uses many of these principles to guide cast members in their weight loss journey.

Dr. Wyatt’s research interests include measuring resting energy expenditure, fat oxidation, total energy expenditure and activity levels in a weight reduced population. She also studies how diet composition affects long-term success in weight loss maintenance. She has studied subjects who are losing weight with the Atkins’ (low carbohydrate) vs. a low fat, high carbohydrate diet. She has also investigated diet composition, exercise patterns and breakfast consumption in the National Weight Control Registry.

Daniel Bessesen, MD
Daniel Bessesen, MD, associate director of the Anschutz Health and Wellness Center, is a professor of endocrinology, metabolism and diabetes at the University of Colorado. More »
Bessesen holds a bachelor of science degree from Colorado State University and earned his medical degree with honors from the University of Colorado. He conducted his postgraduate training at the University of Colorado, where he received a fellowship in endocrinology and metabolism from 1987 to 1990.

Bessesen, who conducts studies in dietary fat metabolism, appetite and the clinical problem of obesity, has published approximately 60 scientific articles and book chapters, and is the coauthor of two books, Evaluation and Management of Obesity, published in 2002, and Treatment of the Obese Patient, published in 2006. Bessesen has repeatedly been named one of the “Top Doctors in Denver” by 5280 Magazine.

Judith Regensteiner, PhD
Judith Regensteiner, PhD, is a professor in the divisions of internal medicine and cardiology at the University of Colorado and director of the Center for Women’s Health Research. More »
Regensteiner is principal investigator and program director for the $2.5 million “Building Interdisciplinary Research Careers in Women’s Health” K-12 grant, which funds junior faculty who wish to build careers in women’s health.

She was an investigator for the National Institutes of Health’s Diabetes Prevention Program and is currently an investigator for the Look Ahead program of the National Institutes of Health to prevent cardiovascular events in people with diabetes by reducing obesity.

She has published extensively in these areas and has received honors including the Department of Medicine PhD Teaching and Research Award and the Henry Christian Award for outstanding cardiovascular research from the American Federation for Medical Research. She was awarded the Elizabeth Gee lectureship award for the University of Colorado for her work with the Center for Women’s Health Research. She was also invited by the US Secretary of Health and Human Services to be one of 13 people to provide evidence for the first Physical Activity Guidelines for Americans.

Iñigo San Millán, Ph.D.
Iñigo San Millán, PhD, is the director of the Human Performance Laboratory at the Anschutz Health and Wellness Center and a faculty member of family medicine and sports medicine at the University of Colorado. More »
Dr. San Millán applies the latest tests, methodologies and approaches in applied exercise physiology and metabolism to help optimize the performance of athletes of all levels and sports. With more than 14 years of experience as an exercise physiologist and sports medicine advisor for many professional teams and elite athletes worldwide, Dr. San Millán is considered one of the top and most experienced applied physiologists in the world, and has worked with many elite and world class athletes and teams in sports including track and field, running, cycling, triathlon, rowing and basketball, including six pro tour cycling teams, a Tour de France winner and 16 Grand Tours podium finishers.

His areas of research and interest include exercise metabolism, fat and carbohydrate utilization during exercise, nutrition, sports performance and overtraining. A competitive cyclist and former professional cyclist, San Millán holds a bachelor's degree from Colorado State University and a doctorate from the University of the Basque Country in Spain. Follow him on Twitter at @doctorinigo.

Mary Randall
Mary Randall is the director of marketing, communication and philanthropy for the Anschutz Health and Wellness Center. Mary’s work focuses on strategic business development, marketing, product development and fundraising. More »
Mary was previously with Millennium Bank in Edwards, Colorado for 10 years where she served as the president of the Edwards and Vail offices and sat on the board of directors of Millennium Bank and Millennium Bancorp, Inc. Mary currently serves on the Board of Directors of CIC Bancshares, Inc. and Centennial Bank. Mary has over 29 years of banking experience. Mary has received many awards for her work in banking including being recognized as the Colorado Banker of the Year in 2003 and the Professional Woman of the Year in Finance for the National Association of Business Women.

Mary is involved in many charitable organizations and is currently a trustee of the Vail Mountain School and is a member of the finance and investment and audit committees. Mary was also a founding member of the Shaw Outreach Team and the past chair of the Vail Valley Medical Center Foundation.

Mary graduated magna cum laude from Wells College and has a master’s of business administration from Northwestern Kellogg School of Business. She lives in Edwards, Colorado with her husband, Chris, and son, Luke.

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