In reply to anonymous123:
At around your age, maybe a year or so older, I'd had shin splints, achillies tendonnitis - both from doing too much running too quickly. I also had a tooth extracted. Then I had a problem with a really painful knee injury after running my first and only marathon,. (experience is a really good teacher). Then I also started canoeing. This upset two major tendons in my hips due excessive rolling, and balancing the canoe as you balance using your hips. I broke a couple of ribs as a result of a minor fall. Then a bit later I broke a bone in my heel following a bit of solo climbing. (there wasn't such a thing as bouldering in my twenties). By now I'd had a well paid scaffolding work in the north sea so I didn't go to the doctors, and it was several years later I discovered what I'd done following another x-ray for something else I can no longer remember what. That explains the limp/pain I had for a few weeks.
I consider myself quite fit even though I have a grandson of your age! I can out run him!! I've done the C to C twice over the last two years and still knock about in the mountains, summer and winter.
So I'm glad I've reassured you. Hopefully your body, if you take reasonable care of it will last until you no longer want to be active.
Good luck!