De Grey's research is aimed at preventing cancer, not curing it. De Grey names his efforts "engineered negligible senescence". Senescence means the increase i

De Grey's research is aimed at preventing cancer, not curing it. De Grey names his efforts "engineered negligible senescence". Senescence means the increase in your probability of developing a deadly disease within the next N years as you grow older. The probability of developing most cancers increases rapidly with age. The aim is to prevent that increase.