My father died at 70 after (or during) his third heart attack.
A healthy, robust beast of a man when young, in his later years he just sat and watched out the window while he smoked his 3 packs a day and ate an incredibly fat heavy diet.
I think he was just waiting to die and he got his wish. I'm not sure how much of this counts as "medical history" rather than self-abuse but, still, I have fairly intractable hypertension and my GP finally gave up and sent me off to a cardiologist specializing in hypertension. First thing he did was to throw a stress test at me. A bit of a maverick, he does not believe in treadmill tests and found he gets better results from using -for want of a better description- a recumbent. He's even had papers published about the approach. Think of an exercycle standing straight up on it's back wheel. You lie on your back (all wired up) with your feet way above your head and you pedal. He increases the resistance as you go along and sees how you do. This test is the only time I've come close to blowing chunks on a bike. The first time I did this I got to 165BPM and my BP spiked so high that my Dr freaked and literally shut me down. That became my own personal, mandated speed limit" - 165BPM. I went back a year later for another and this time he was very pleased. I hit 165BPM and was able to continue for two more minutes before my BP got high enough to stop. He was thrilled and said to keep on doing whatever I've been doing for the past year. He also raised my speed limit to 170. He also raised my quarterly visits to twice a year and after some discussion told me not to worry too much about shutting down at 170. He asked how long I would hold that rate and I said I can hit 170 for 15-20 minutes up one Cat 3 climb that I do. He said that was fine. I still err on the side of caution. I wonder if hitting and holding the higher BP levels that cycling can provide helps the body adapt to it better?