The problem is that we are so complex and this world is so complex that the factors which may contribute to longer life are at best probabilities and much of th

The problem is that we are so complex and this world is so complex that the factors which may contribute to longer life are at best probabilities and much of these probabilities are not even known. Although there is plenty one can do, Italians for example seem to live longer that is due to their Mediterranean diet and their love of wine.