Aubrey de Grey, PhD, a biomedical gerontologist, is the chief science officer of SENS Research Foundation, a charity dedicated to combating the aging process. He is editor-in-chief of Rejuvenation Research, the world's highest-impact peer-reviewed journal focused on intervention in aging. His research interests encompass the characterization of all the accumulating and eventually pathogenic side-effects of metabolism (damage) that constitute mammalian aging and the design of interventions to repair and/or obviate that damage. He has developed a possibly comprehensive plan, termed Strategies for Engineered Negligible Senescence (SENS), which breaks aging down into seven major classes of damage and identifies detailed approaches to addressing each one. A key aspect of SENS is that it can potentially extend healthy lifespan without limit. de Grey, a fellow of the Gerontological Society of America and the American Aging Association, sits on the editorial and scientific advisory boards of numerous journals and organizations.