Dr. Tollefsbol is a Distinguished Professor of Biology and a Senior Scientist in the O'Neal Comprehensive Cancer Center, Integrative Center for Aging Research, Nutrition Obesity Research Center, University Wide Microbiome Center, and the Comprehensive Diabetes Center at the University of Alabama at Birmingham (UAB). He is Director of the UAB Cell Senescence Culture Facility which he established in 1999. Dr. Tollefsbol trained as a Postdoctoral Fellow and Assistant Research Professor with members of the National Academy of Science at Duke University and the University of North Carolina. He earned doctorates in molecular biology and osteopathic medicine from the University of North Texas Health Sciences Center and his bachelor's degree in Biology from the University of Houston. He has received prior funding from the NCI, NHLBI, NIMH and other federal institutes as well as the Glenn Foundation for Medical Research, Susan G. Komen for the Cure, the American Federation for Aging Research (AFAR), and the American Institute for Cancer Research (AICR) among many other sources.