Bruce W. Hollis

Bruce W. Hollis, PhD, is a Professor in the Department of Pediatrics at the Medical University of South Carolina's College of Medicine. He specializes in vitamin D metabolism and clinical diagnostics, with a focus on its role in pregnancy, lactation, and oncology. His laboratory developed FDA-approved assays for vitamin D metabolites, pivotal for research and clinical diagnosis since the 1990s. Hollis holds a BS (1973) and MS (1976) from The Ohio State University and a PhD (1979) from the University of Guelph.

Research interests include vitamin D's impact on calcium homeostasis, maternal-fetal health, and cancer therapy. Notable studies include randomized controlled trials on prenatal supplementation (2011) and maternal-infant vitamin D effects during lactation (2015). His work on high-dose vitamin D in colorectal cancer (2019) advanced oncology research. Hollis led the first FDA-approved IND for vitamin D studies, enabling clinical trials in this field.