Our Experts

Dr. Kendal Stewart serves as a Medical Director specializing in Nutrigenomics for GX Sciences, in addition to being the Medical Director and Chief Science Officer for Neurobiologix and Dr. Neurobiologix. He’s a member of the American Academy of Anti-Aging Medicine, and he founded and serves as Chairman for the Neurosensory Centers of America. Dr. Stewart graduated from the University of Texas at Austin with a BA in Biology with Honors as well as a minor in Chemistry. He graduated with a Medical Doctorate from the University of Texas Medical School, where he also received a Distinguished Student of Clinical Medicine Award for the class of 1988. He served as a biomedical research assistant under Takahashi Yamora, PhD, in the Department of Biochemistry and Molecular Biology at MD Anderson Cancer Institute. There, he researched biochemical analysis of surface protein markers in colorectal cancers. Dr. Stewart completed his residency at University of Texas Houston Affiliated Hospitals and MD Anderson Cancer Institute. During his residency, he received multiple awards, including the Outstanding Clinical Resident Teaching Award in 1993 and the Outstanding Resident Research Award & Scholarship from the Texas Medical Association/Texas Association of Otolaryngology in 1992. He was explicitly selected for a highly sought-after Fellowship in Otology and Neurotology – Skull Base Surgery at Baylor University Center in Dallas. During this time, he also served as a Clinical Adjunctive Professor. Dr. Kendal Stewart is a Board-Certified Otolaryngology/Head and Neck Surgery specialist and has sub-specialty training in Otology and Neurotology – Skull Base Surgery. He served as a Clinical Associate Professor at the University of Texas Medical School at San Antonio’s Department of Otolaryngology from 1994 to 1996. He’s been tapped to speak at national conferences over 40 times as a result of his expertise. Additionally, Dr. Stewart has volunteered his time for numerous academic pursuits, including assisting in designing Masters and Doctorate candidate projects for the University of Texas Department of Kinesiology, Psychology, and Speech and Language Development, as well as assembling a patient database for these efforts. He has also participated in two doctoral candidate review boards at the University of Texas. As a leading expert in Neuro-sensory Disorders, Methylation, and Genetic Polymorphisms, Dr. Stewart has encouraged all practitioners to learn the biochemical pathways necessary to objectively verify their patients’ nutritional needs. But, with contemporary advances to genetic testing and nutrigenomic testing in particular, the efficacy and necessity of supplemental nutrition has been scientifically corroborated and validated. With the experience of treating thousands of patients and reading thousands of genetic reports, Dr. Stewart surmised that nutritional supplementation ought to be carefully constructed for each individual. This belief provided the seed for the idea of Neurobiologix. Dr. Kendal Stewart, together with investors, formed Neurobiologix, Inc. to provide the highest quality supplementation available while cutting costs for the consumer. By combining the specific supplements that belong together biochemically, Neurobiologix is able to restrict most people’s supplementation to just a few unique, exclusive formulations. Further, Dr. Stewart has said: “When genetics came around in late 2013 and early 2014, we saw a major transition. The machines we used to have to use for genetic interpretation were large, cumbersome and expensive. But then the machines shrank significantly. With this major change we can now look at an individual and address any issues, and hopefully avoid major medical issues that you would have had to typically deal with retroactively. Today, using a cheek swab, we are able to use genetics to look at what nutritional elements may be weak and at a person’s mitochondria and battery of cells. We’re able to proactively overcome a lot of those weaknesses, and maintain health in a whole, better way. We can customize and tailor specific needs based on you alone rather than on say, a group of patients that have this medical condition. Now we can actually strengthen the immune system, and see who’s at risk and work to keep them from getting the disease in the first place. It’s completely transitioned the way we practice medicine. So instead of cutting people open, we’re better at reviewing genetics and much more successful at providing them a quality life. With GX Sciences (formerly Genomix nutrition), which we founded in April of 2016, we are actually able to address upfront a major weakness your body has, and overcome it. We call it precision medicine.”

Gustavo Torres is the Project Manager currently working at Fagron Genomics, specializing in molecular and human genetics, thus, involved in developing genetic tests and technical support. Dr. Torres acquired his pharmacy degree at the Federal University of Juiz de Fora (2010-2016), where, in collaboration with USP and Butantan Institute, he developed research on human adult stem cells. He participated in the foundation of the first two institutional stem cell biorepositories. He produced several publications describing adult stem cells as study models for genetic diseases, most importantly, neurofibromatosis type I. Also, during his pharmacy formation, he was awarded an international research grant by the American Fund for the Improvement of Postsecondary Education (FIPSE) to study and research at Colorado College, where he developed research on computational quantum chemistry. During graduate school, in the program of Genetics and Biotechnology, he worked in the Brazilian Agricultural Research Corporation in collaboration with several private international entities. He researched mechanisms involved in using lentivirus and CRISPR-Cas9 as systems to produce genetically modified animals for several purposes, including producing human recombinant proteins for medical purposes and improving the understanding of phenotype-genotype relationships. He also served as Assistant Professor at Paulista University, where he was responsible for teaching Human Genetics and Clinical Biochemistry.

Dr. Gorana Kuka Epstein is a board-certified plastic and reconstructive surgeon from Belgrade, Serbia. She is a fellow at the Institute for Functional Medicine. She is one of the pioneers of the FUE technique that she has been practicing since 2007. Apart from the surgical aspect of hair restoration, she is highly interested in regenerative treatments for hair loss, such as adipose tissue therapy, regenerative cells, and PRP. Another area of her expertise in diagnosing and treating women suffering from hair loss. Dr. Kuka Epstein is a Diplomate of the American Board of Hair Restoration Surgery. She is finalizing her Ph.D. thesis on regenerative medicine for hair loss at the University of Novi Sad, Serbia.  In 2014. she moved to the USA, where she joined the Foundation for Hair Restoration in Miami while still maintaining her practice in Belgrade. She is supervising and conducting studies within the Foundation, primarily on the regenerative potential of adipose tissue in treating various forms of alopecia. In her practice, she applies for functional medicine in the treatment of hair loss of her patients, and she established a hair loss expert due to her unique approach to patients.  In 2022, she was appointed as a Key Opinion Leader for GX Science and serves as an advisor to GX Sciences and Fagron to improve the quality of genetic testing for hair loss.  She published extensively in various journals and books related to regenerative medicine, dermatology, and plastic surgery.  She is married to Dr. Jeffrey Epstein and has two children- Alex and Sasha.