[David70]

Agree with the above.

I am 44 and have been running for 31 years and run in a running group (6' 1" and 185 lbs.) where some are up to late 60's early 70's (many people, different subgroups). Don't increase your mileage quickly, wear good shoes and replace them regularly, possibly crosstrain if you end up getting to really high mileage. I don't believe regular running will cause you problems.

My wife is a nurse on an orthopedic floor, people getting knee replacements are generally overweight/obese not getting them because of too much of any type of exercise.