Hypothetically, if all conditions where met, that being perfect nutrition, perfect immunity, ideal exercise (not to much not to little), ideal social interactions for the specimen at hand, all needs fulfilled. How long would it take until a persons body is so old it just can't exist any longer? 130 years? 150? longer? And when I mean all conditions are met I mean they are absolutely perfect conditions. this may stupid and a little vague with how I'm asking this but I've just been thinking about this a lot and I want to know what you guys think.