Dr. Longo is the Director of the USC Longevity Institute, a Professor of Gerontology and Biological Sciences and the Edna Jones Chair of Biogerontology. He is interested in understanding the mechanisms of aging in organisms ranging from yeast to humans. The focus is on the conserved nutrient signaling pathways that can be modulated to protect against age-dependent oxidative damage and delay or prevent diseases of aging including cancer, diabetes and neurodegenerative diseases.