Marathon runners tap brain-cell insulation for racetime fuel
Nature, Published online: 24 March 2025; doi:10.1038/d41586-025-00864-zMRI scans suggest runners’ brains might use the fatty substance myelin as fuel. The finding could lead to treatments for neurological diseases.

Nature, Published online: 24 March 2025; doi:10.1038/d41586-025-00864-zMRI scans suggest runners’ brains might use the fatty substance myelin as fuel. The finding could lead to treatments for neurological diseases.