20/09/2025
That doctor telling you to stop running because it'll "wear out your joints"? They might want to read this study. 🏃♀️
New research from 3,804 Chicago Marathon runners just dropped some truth bombs about running and arthritis that every runner needs to know.
The biggest finding from this massive study challenges everything you've been told about marathon running and joint health. Results from the largest survey of marathon runners ever conducted showed no association between cumulative running history and the risk for arthritis.
Let that sink in. Cumulative number of years running, number of marathons completed, weekly mileage, and mean running pace were not significant predictors for arthritis.
But here's what DID matter for arthritis risk: age, BMI, previous injury or surgery, and family history. Sound familiar? These are the same risk factors that affect everyone - runners or not.
The arthritis rate? Only 7.3% of marathon runners had hip or knee arthritis. Compare that to the general U.S. population where it's significantly higher.
Here's the practical takeaway for your training: Focus on what you can control.
Maintain a healthy weight, address injuries properly with qualified professionals, and don't let previous injuries keep you from getting back to running safely.
Most importantly? One in four people have received a recommendation by their physician to reduce their running volume, and for those with arthritis, nearly 50% of runners were told by their physicians to stop running altogether - despite this evidence showing running itself isn't the culprit.
The researchers followed runners averaging 44 years old who'd been running for about 15 years, covering around 28 miles per week. These weren't elite athletes - they were recreational runners just like you.