Vitamin B12: fueling aging muscles by reviving mitochondrial energy
TL;DR
New Cornell-led research shows that even modest Vitamin B12 shortfalls can degrade aging muscle energy by harming mitochondria: B12 deficiency reduces mitochondrial DNA integrity and respiratory capacity, while short-term B12 supplementation in older mice doubled mitochondrial complex IV activity and boosted energy, suggesting blood B12 levels could guide precision nutrition to counter age-related muscle decline.
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