There does seem to be cullings, or die-offs of people I went to school with at various ages, some of whom will benefit from medical advances and some who will not...
Childhood illnesses and traffic accidents and other deaths by misadventure invariably took a portion of lives, but the first major dieoff age seems to be late 50's to early 60's when untreatable/agressive cancers, diabetes that gets out of control,undiagnosed heart/liver problems take their toll of that sector probably not genetically disposed towards a long life...
From what I understand from a doctor friend I grew up with, generally if you get to the 70's without a major dependence on medication, or the alternative, you get to your 70's with a major medical dependence that is regularly and closely monitored and adjusted (like warfarin after heart surgery) you are likely to have a reasonable genetic profile that allows you to live on for another 20 years or so, provided you make reasonably sensible nutrition and exercise choices...
At some stage personal genetics and the choices you make about your ongoing nutrition, actitivies and how you develop your mind seem to put you in a good position to benefit from medical advances provided or course you dont continually end up in ICU where some 30% of deaths are apparently attributed to iatrogenic (doctor/nurse mistakes)...
