Sergej Ostojic is a Professor at the Department of Nutritional Sciences at Texas Tech University with extensive experience spanning clinical medicine, nutrition science, and translational bioenergetics. He is an internationally recognized leader in creatine biology, energy metabolism, and molecular hydrogen research, with a strong focus on bridging fundamental mechanisms with clinical and public-health applications.

Dr. Ostojic has led and contributed to numerous randomized controlled trials, mechanistic studies, and large-scale data analyses (including NHANES, GBD, NCD-RisC, and All of Us), and has secured competitive funding over $10 million through academic, governmental, and industry partnerships. His work has advanced understanding of creatine as a conditionally essential nutrient, guanidinoacetic acid metabolism, and hydrogen-mediated mitochondrial signaling. He holds multiple patents and invention disclosures related to creatine formulations and bioenergetic interventions in the US, UK, EU and Japan.

His research has been published in leading journals such as The Lancet, Nature, BMJ, Trends in Food Science and Technology, Clinical Nutrition, American Journal of Clinical Nutrition, Nutrition Reviews, Advances in Nutrition, and other high-impact outlets in nutrition, bioenergetics and clinical medicine. Dr. Ostojic serves as an Editor-in-Chief for Clinical Bioenergetics, Associate Editor for Clinical Nutrition ESPEN, and an Editorial Board Member for Nutritional Neuroscience, Food Science and Nutrition, and Journal of Functional Foods.