
B12: A Hidden Regulator Linking Metabolism, Aging, and Muscle Health
Cornell researchers show vitamin B12 acts as a gatekeeper for metabolic hub pathways, linking B12 status to muscle mitochondrial energy production and potentially aging, immune resilience, and disease risk. The study identifies biomarkers for early nutritional stress and suggests B12–based personalization of nutrition. Findings from cell and mouse models require human trials to confirm; suboptimal B12 status is common in older adults and in vegans/vegetarians due to reduced meat intake or malabsorption.





