question: I know this will be difficult to answer. I have had a heart triple bypass in 2000. one of the transplants failed. I have had 5 procedures of taking blood clots out of my left leg over the past five years. This year i have had a procedure to clean out leg. it lead to finally getting a leg bypass. As a result I have no veins left. My father died at 41. my sister at 47 of heart disease. I am trying everything possible but seem to have the genetics against me. I am 64. is there a way to determine my longevity. I have 8 grandchildren.