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Marathon Running Disrupts Brain Myelin, Study Reveals

4/8/2025

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Summary

Story summary

A groundbreaking study in Nature Metabolism reveals that marathon running can temporarily deplete myelin levels in the brain, disrupting motor coordination and sensory integration. Researchers used MRIs on 10 runners and found that while myelin levels do bounce back, the results highlight how intense endurance activities can challenge brain function, unlike moderate exercise, which may boost myelin recovery.

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Story summary

A groundbreaking study in Nature Metabolism reveals that marathon running can temporarily deplete myelin levels in the brain, disrupting motor coordination and sensory integration. Researchers used MRIs on 10 runners and found that while myelin levels do bounce back, the results highlight how intense endurance activities can challenge brain function, unlike moderate exercise, which may boost myelin recovery.