Claim Substantiation and Science Consulting

Claim Substantiation and Science Consulting

Claim Substantiation and Science Consulting Claim Substantiation and Science Consulting

About Us


Susan Hewlings PhD, RD


Dr. Susan Hewlings received her PhD in nutrition her BS in nutrition and her MS in exercise physiology, from Florida State University. She is a Registered Dietitian, a full- time professor at Central Michigan University, and Director of Scientific Affairs for Nutrasource. She is Co-Founder of Substantiation Sciences LLC where she provides science and nutrition consulting services and medical writing for the dietary supplement, CBD, cannabis and medical industries. She was formerly an assistant professor at The University of Central Florida College of Medicine where she was responsible for integrating nutrition into a new medical school curriculum. Susan completed a fellowship studying protein and fat metabolism at The University of Texas Medical Branch/Shriners Burn Institute. She is the author of Nutrition: Real People, Real Choices and has published multiple articles on dietary supplements, CBD, cannabis, pharmacokinetics and nutrition. Dr. Hewlings is the founder and director of The A.R.F. Shack 501c3 non-profit animal rescue. She is currently living with her 3 dogs in the Florida Keys. She is also a competitive ultrarunner and adventure racer.

Douglas Kalman PhD, RD


Dr. Kalman has been involved in over 200 clinical trials and projects within the pharmaceutical, medical and nutrition fields. He has published over 75 abstracts and more than 30 peer-reviewed manuscripts. Dr. Kalman has also published over five academic textbooks, all of which include aspects and discussions of substantiation. He is also a Co-Editor of one journal (JISSN) and on the Editorial Board of three Scientific Journals.

Dr. Kalman has served as an Expert and Fact Witness along with being a contracted Expert for various law firms for cases involving nutrition, sports nutrition, dietary supplements, claims substantiation, clinical trials, clinical trials conduct, nutritional product assessment, Patent and Intellectual Property-related works and more. Dr. Kalman has testified in Federal and State Courts, to US Regulatory Department Agencies, provided Expert Reports and Guidance and has worked with the US National and International law firms. 

Dr. Kalman is an Adjunct Professor at Nova Southeastern and is currently serving as the sports nutritionist for a professional combat team based in South Florida. In addition, he is a consultant to the Coral Springs Aquatic Center (Elite and Olympic Training Center) and a Performance Nutrition Consultant to the United States Tennis Association (USTA) for Player Development Program.

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