Not too much maybe, but I do think running for an hour a day will cause some harm down the road, though it might take years, even decades, for the effects to become apparent. And since you expressed concern yourself, I thought it was even more critical in your case. These are just opinions, of course, not so much based on studies, but mostly on cases of people I know who've been running, and also extrapolated from what I know about how our species evolved in the past. Humans did quite a lot of walking, yes. But no running. They did as little running as they could. This is true for extant native cultures too. Humans are generally lazy! But menial work was always part of the picture.