Guido Kroemer, MD, PhD, is a cell biologist who has made contributions to the understanding of the role of mitochondria in cell death. He is a member of multiple scientific academies in Europe and is one of the most highly cited authors in cell biology. Guido leads the Kroemer Lab, focused in intracellular and extracellular stress pathways to understand the pathophysiology of aging and aging-related morbidities, especially cancer.