No, running does not wear out your joints

“Running wears your joints out faster.”

“Running is a bad idea for older people.”

“Running causes arthritis in your knees.”

Actually, the opposite is true:

The knees absorb a lot of force when running, so many people think that running itself can accelerate the natural wear and tear on the joints. But in fact, the medical research tends to show that running has a protective effect against arthritis.

Harvard Medical School

(Related post: Running advice I wish I’d gotten)