Claims of unusual longevity in the Caucasians of Southern Russia, in Hunza in West Pakistan, and in the Ecuadorian village of Vilcabamba are false. Birth certificates in the U.S. were not required until 1933. You have more pleasure time and greater opportunity to enjoy friends and grandchildren and to make new acquaintances. You are older and wiser and don't need to prove anything to anyone. If somebody is having problems with me, that's their problem.
People fear attenuated senility more than death.
When you are 70 you have about 12 years to look forward to, at 80 about 9, and at 85 approximately 7 years. To live in fear of death is to fear living. A king used to pay in gold for the elixir of life. You can get advice on risk factors for the cost of a newspaper. Now that's science fiction.