A member asked:

I walk 30 minutes each way to the train station. will this really wear away at my knees over several years?

7 doctors weighed in across 2 answers

No: There is no solid evidence that I am aware of that shows that exercise of any sort increases the risk of arthritis. Arthritis can be caused by trauma to a joint - such as a fracture involving a joint surface. Obesity also can cause arthritis because the excess weight literally crushes the cartilage cells. All the more reason to stay in shape!

Answered 10/4/2016

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Dr. Thomas Deberardino answered

Specializes in Orthopedic Surgery

Walking always great: In general, walking is always a terrific aerobic exercise that we should all do more of each day. Your overall health and specifically the health of your heart and lungs will be served well with a sound walking regimen. Walking is consider a lower impact aerobic exercise as compared to jogging, running and playing hard court sports such as basketball. Keep up the good work!

Answered 1/30/2015

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