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Cornell study links vitamin B12 deficiency to weaker muscles and faster metabolic aging
Health & Fitness
Published on 8 May 2026
One in four older adults may be running low
Cornell University research adds a new twist to healthy aging: low vitamin B12 may damage skeletal muscle mitochondria, reducing energy production and cellular resilience. The study found suboptimal B12 levels are common among older adults, and B12 supplementation improved mitochondrial function in aged mice. Human trials are now needed to confirm whether correcting deficiency can slow aspects of age-related decline.
- B12 deficiency can impair muscle mitochondrial energy production
- Low B12 is linked with weaker resilience and reduced muscle mass
- About one in four older adults may have suboptimal B12
- Mouse supplementation improved muscle mitochondrial function
Read the full story at The Economic Times
This summarization was done by Beige for a story published on 
The Economic Times