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Marathon Running Boosts Brain Energy, Alters Myelin Levels

4/2/2025

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Summary

Story summary

A groundbreaking study in Nature Metabolism reveals that marathon running ramps up the brain's energy needs, causing it to tap into myelin for fuel. Scans of ten runners showed notable shifts in brain regions linked to motor control and emotion just two days after the race, though myelin levels normalized within two months. More research is essential to uncover the long-term implications.

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Story summary

A groundbreaking study in Nature Metabolism reveals that marathon running ramps up the brain's energy needs, causing it to tap into myelin for fuel. Scans of ten runners showed notable shifts in brain regions linked to motor control and emotion just two days after the race, though myelin levels normalized within two months. More research is essential to uncover the long-term implications.