معرفی
Charles B. Stephensen, Ph.D., is the Director of the USDA ARS Western Human Nutrition Research Center (WHNRC) and an Adjunct Professor in the Department of Nutrition at the University of California, Davis. His research focuses on the interplay between nutritional status, immune function, and chronic diseases, particularly vitamin A, D, and omega-3 fatty acids. He holds a B.S. in Biochemistry from UC Davis, an M.S. in Human Nutrition from Cornell University, and a Ph.D. in Immunology and Infectious Diseases from Johns Hopkins University.
Key research interests include the role of diet in modulating the gut microbiome, vitamin deficiencies in immunocompromised populations (e.g., HIV/AIDS patients), and the effects of antiretroviral therapies on bone health. Dr. Stephensen has led studies on vitamin D supplementation in HIV-infected youth, demonstrating its impact on bone mineral density and hormonal balance.
His work spans clinical trials, epidemiological studies, and animal models, with a focus on translational research to improve global health outcomes. Notable contributions include investigations into the metabolic effects of inflammation on micronutrients and the design of interventions targeting micronutrient deficiencies in vulnerable populations.
Dr. Stephensen collaborates extensively with institutions like the Pediatric HIV/AIDS Cohort Study and the Adolescent Medicine Trials Network (ATN), contributing to studies on antiretroviral drug efficacy and long-term health outcomes. His research also explores genetic factors influencing vitamin D metabolism and their implications for personalized nutrition strategies.
He oversees the WHNRC, a USDA facility dedicated to advancing human nutrition science through interdisciplinary research. His efforts bridge basic science, clinical trials, and public health policy, emphasizing the role of nutrition in preventing and managing chronic illnesses.
