Excessive running negatively impacts cardiovascular and joint health
While moderate running offers well-documented cardiovascular benefits, the evidence regarding excessive or ultra-endurance running is contested, with some studies pointing to potential risks for long-term cardiovascular and musculoskeletal health while others find running generally safe and not directly linked to increased arthritis.
The claim addresses two components: cardiovascular health and joint health under excessive running. Papers [2], [6], and [7] note potential cardiac risks or maladaptations associated with extreme endurance exercise. Conversely, paper [8] finds marathon training generally safe, and paper [9] demonstrates no significant association between running history (mileage, marathons) and arthritis. Because cardiovascular risks at extremes are debated and joint health studies largely refute the idea that running causes arthritis, the verdict is CONTESTED.
The evidence we hold leans leans supported
How this was weighed
official record 3x · fact-check 2x · hedged 1x · crowd & reference 1x
- Cardiovascular Effects and Benefits of Exercise · peer-reviewed · supports · weight 2 · 2018
- Are There Deleterious Cardiac Effects of Acute and Chronic E · peer-reviewed · supports · weight 2 · 2015
- Potential Long-Term Health Problems Associated with Ultra-En · peer-reviewed · supports · weight 1.6 · 2021
- Physiology and Pathophysiology of Marathon Running: A narrat · peer-reviewed · refutes · weight 1.3 · 2025
- Does Running Increase the Risk of Hip and Knee Arthritis? A · peer-reviewed · refutes · weight 1.05 · 2024
Matthew A. Nystoriak, Aruni Bhatnagar. Cardiovascular Effects and Benefits of Exercise. 2018. https://doi.org/10.3389/fcvm.2018.00135
Notes that continuously high levels of exercise like marathon running could have detrimental effects on cardiovascular health.
Braschler L, Nikolaidis PT, Thuany M, Chlíbková D, Rosemann T, Weiss K, Wilhelm M, Knechtle B. Physiology and Pathophysiology of Marathon Running: A narrative Review.. 2025. https://doi.org/10.1186/s40798-025-00810-3
Concludes that marathon training is generally safe for human health and individual organ systems, providing overall cardiovascular and systemic benefits.
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Thijs M.H. Eijsvogels, Antonio B. Fernández, Paul D. Thompson. Are There Deleterious Cardiac Effects of Acute and Chronic Endurance Exercise?. 2015. https://doi.org/10.1152/physrev.00029.2014
Examines how extremes of endurance exercise may increase cardiovascular disease risk and markers for cardiac events.
Volker Scheer, Nicholas B. Tiller, Stéphane Doutreleau, Morteza Khodaee, Beat Knechtle, Andrew Pasternak, Daniel Rojas‐Valverde. Potential Long-Term Health Problems Associated with Ultra-Endurance Running: A Narrative Review. 2021. https://doi.org/10.1007/s40279-021-01561-3
Highlights mounting evidence that ultra-endurance running may lead to long-term health problems and potential cardiovascular maladaptation.
Hartwell MJ, Tanenbaum JE, Chiampas G, Terry MA, Tjong VK. Does Running Increase the Risk of Hip and Knee Arthritis? A Survey of 3804 Marathon Runners.. 2024. https://doi.org/10.1177/19417381231190876
Finds no significant association between cumulative running history (such as marathons completed and weekly mileage) and the risk of hip or knee arthritis.
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