Thanks, @myob. I hear you! Sometimes we do need medical intervention - broken legs, stitches, surgeries - but more and more, I lean toward @owasco's conviction: "the best way to live a long and healthy life is to stay away from doctors altogether."
Dad was in great health and avoided doctors for 3/4 of a century.
Processed foods are the #1 culprit I can think of; he didn't get vaccinated or medicated until university hospitals got hold of him and proposed surgically removing his eye (injured by a steel bit because he wouldn't wear safety goggles). A second opinion led to some daily med for the pressure in the eye. He's been declining every year since.