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Marathon Running Boosts Brain Health, Study Reveals

9/16/2025

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Summary

Story summary

A study investigates marathon running's impact on brain health, focusing on myelin water fraction (MWF) in older runners aged 45 to 73.
Scans of 10 participants revealed significant MWF reductions in white matter after the marathon.
MWF levels returned to baseline within two months, showing the brain's recovery capability.
The study suggests marathons may enhance brain metabolic flexibility, warranting further research with larger cohorts.
Published in Nature Metabolism, it underscores aerobic exercise's benefits for brain function.

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Story summary

A study investigates marathon running's impact on brain health, focusing on myelin water fraction (MWF) in older runners aged 45 to 73.
Scans of 10 participants revealed significant MWF reductions in white matter after the marathon.
MWF levels returned to baseline within two months, showing the brain's recovery capability.
The study suggests marathons may enhance brain metabolic flexibility, warranting further research with larger cohorts.
Published in Nature Metabolism, it underscores aerobic exercise's benefits for brain function.