After reading all the misfortunes that others have experienced I feel pretty lucky at 79. Nothing really major health wise.
Not fast but durable, putting in 100 plus miles per week. Minor inconvenience of a hydrocele (I had never heard of it either). Two visits to the hospital for back injuries (degenerative discs). Blood pressure is under control and attitude on the bike is superb. Life is good! Practice my French out on the lonelier roads and appreciate the sight of healthy people sharing the road with me.