GNHA Members


Regan L Bailey, PhD, RD, MPH, CPH

Associate Professor of Nutrition Science, Purdue University, Indiana, U.S.

Dr. Regan Lucas Bailey is an Associate Professor in the Department of Nutrition Science at Purdue University. Previously, Dr. Bailey was a Nutritional Epidemiologist at the Office of Dietary Supplements, Office of Disease Prevention at the National Institutes of Health. The overarching goal of her research program is to prevent or lessen the risk of chronic disease through nutrition. Dr. Bailey is a registered dietitian who completed a MS in Food and Nutrition from the Indiana University of Pennsylvania, her PhD in Nutrition Science from The Pennsylvania State University and her MPH from the Bloomberg School of Public Health at Johns Hopkins University.

Nigel Denby, RD

Head of Dietetics, and People Matter TV; London, UK

Author of nine successful nutrition books and a broadcaster in the UK and throughout Europe, Nigel Denby is founder of Grub4life, which provides support, information, recipes and advice to parents and teachers of young children. Following a career as a chef and restaurateur, Denby combined his love of food with professional training as a dietitian at Glasgow Caledonian University. He began his career as a Research Dietitian at the Human Nutrition Research Centre at Newcastle University and went on to offer nutrition consulting. Currently, Denby runs his own private practice in London, specializing in Weight Management, PMS/Menopause, Irritable Bowel Syndrome and food intolerance.

Alejandra A. Gratson, PhD

Global R&D, Health and Wellness team, Reckitt Benckiser

Dr. Gratson received her BS/MS in Food Chemistry from Ludwig-Maximilians-University of Munich, Germany, and her PhD in Nutritional Sciences from the University of Illinois at Urbana-Champaign, IL. Her career in the dietary supplement industry began as a Formulation Scientist at Fortitech, Inc., (DSM) and she went on to hold various leadership roles in R&D and Global Regulatory Affairs at Pfizer Consumer Healthcare. She currently leads the dietary supplements Global Medical and Regulatory Affairs team as part of Reckitt Benckiser’s Global R&D, Health and Wellness team.

Clemens von Schacky, MD

Head of Preventative Cardiology, University of Munich; Munich, Germany

Dr. Clemens von Schacky, is an internationally known expert on Omega-3 fatty acids. A board-certified cardiologist, he has been leading the unit of Preventive Cardiology at the Ludwig Maximilians-University of Munich for more than 20 years. Together with Dr. William Harris, he invented and defined the Omega-3 Index, a standardized method for fatty acid analysis. He is a Fellow of the European Society of Cardiology and a member of the German Heart Association's Prevention Committee. He works on guidelines for German and Spanish scientific societies, like Deutsche Gesellschaft für Prävention und Rehabilitation.

Katherine Sherif, MD

Director, Jefferson Women's Primary; Philadelphia, PA, USA

Dr. Katherine Sherif is a Professor and Vice Chair of the Department of Medicine at Thomas Jefferson University Hospital in Philadelphia, where she serves as Director of Jefferson Women’s Primary Care. Dr. Sherif’s clinical and research areas of expertise include the effect of sex hormones on metabolism, polycystic ovary syndrome and nutrition. She is the author of two texts on women’s health. She received her medical degree from Medical College of Pennsylvania.

Suzanne Steinbaum, DO, FACC, FAHA

Director, Women's Cardiovascular Prevention, Health and Wellness, Mt. Sinai Hospital; New York, NY, USA

Dr. Suzanne Steinbaum has devoted her career to the treatment of heart disease through early detection, education and prevention. She is the Director of Women's Cardiovascular Prevention at Mt. Sinai Hospital in New York City and has been awarded a New York Times Super Doctor, a Castle and Connolly Top Doctor for Cardiovascular Disease and New York Magazine’s prestigious Best Doctors in the New York edition. A Fellow of the American College of Cardiology and the American Heart Association, she also serves as a national spokesperson for the Go Red for Women campaign and is on the New York City Board of the American Heart Association.

Consulting Member: William S. Harris, PhD, FAHA, FNLA

Professor of Medicine, University of South Dakota School of Medicine, and President and CEO OmegaQuant Analytics, LLC, South Dakota, U.S.

Dr. Harris obtained his PhD in Human Nutrition from the University of Minnesota, and did post-doctoral fellowships in Clinical Nutrition and Lipid Metabolism. Together with Dr. Clemens von Schacky he invented and defined the Omega-3 Index, a standardized method for fatty acid analysis. He has been the recipient of five NIH grants for studies on the effects of Omega-3 fatty acids (EPA and DHA) on human health and has over 190 publications relating to Omega-3 fatty acids in medical literature and was an author on two American Heart Association scientific statements on fatty acids, which were both published in the journal Circulation. Dr. Harris is a Professor in the Department of Medicine in the Sanford School of Medicine at the University of South Dakota, and the President and CEO of OmegaQuant.