Welcome to Substantiation Sciences

Dr. Susan J. Hewlings is a distinguished scientist, researcher, and educator with a deep passion for health, nutrition, and fitness. As Co-Founder of Substantiation Sciences, she leverages over 20 years of expertise in research, teaching, and scientific consulting to help brands navigate the complexities of product development, regulatory compliance, and evidence-based substantiation.

Dr. Hewlings holds a PhD in Nutrition, an MS in Exercise Physiology, and a BS in Nutrition from Florida State University. She is a registered dietitian and has completed a research fellowship in protein metabolism at the University of Texas Medical Branch, along with earning a graduate certificate in cannabis science from the University of Vermont Medical School.

Her extensive background includes providing scientific and nutritional guidance across industries such as dietary supplements, food and beverage, medical nutrition, and companion animal health. She has played a pivotal role in bridging the gap between science, product innovation, and market success for leading brands. She was Director of Scientific Affairs at Nutrasource GRAS Associates before becoming Sr Vice President of Research Affairs at Radicle Science, a health tech start up providing decentralized research trials. 

In addition to her work in industry, Dr. Hewlings has held faculty positions at Stetson University, the University of Central Florida College of Medicine, and Central Michigan University, and her research is widely published in peer-reviewed and trade journals.

Beyond her scientific contributions, Dr. Hewlings is the founder and director of The ARF Shack Inc., a 501(c)(3) non-profit animal rescue. She resides in the Florida Keys, where she enjoys distance running, aerial arts, weightlifting, yoga, and paddleboarding with her dogs.

 Dr. Kalman, along with Dr. Sue Hewlings is a Co-founder of Substantiation Sciences. Dr. Kalman is also a Clinical Associate Professor in the Dr. Kiran C. Patel College of Osteopathic Medicine at Nova Southeastern University in Fort Lauderdale Florida. Substantiation Sciences is a strategic nutrition/scientific and regulatory business consultancy. Historically, Dr. Kalman was a co-founder of the International Society of Sports Nutrition (ISSN). Most recently, Dr. Kalman served as the Senior Vice President of Scientific and Regulatory Affairs for The Natural Products Association (NPA). Earlier in his career, Dr. Kalman was the VP of Scientific Affairs for Nutrasource, a nutrition-centric Contract Research & Service Organization.  He led the nutrition research dividion at Miami Research, an independent CRO serving the dietary supplement and pharmaceutical industried. He has worked six Olympic games and with a multitude of teams and individuals on the collegiate and professional sport levels. Dr. Kalman has been involved in over 400 clinical trials and projects within the food/beverage/dietary supplement and pharmaceutical industries. He has published over 100 peer-reviewed manuscripts, more than 100 abstracts/poster sessions and has authored or co-authored five academic textbooks. Outside of his love for the field of nutrition and health, Dr. Kalman enjoys time with his family, exercising and in being of service to others.