Summary
New research suggests vitamin B12 plays a bigger role in muscle health than previously understood. Scientists found that low B12 levels impair energy production in skeletal muscle cells by disrupting mitochondrial function, potentially contributing to muscle weakness, fatigue, and age-related muscle loss. In animal studies, B12 supplementation improved mitochondrial health and helped maintain muscle mass. Researchers caution that the findings do not mean everyone should take supplements, especially if B12 levels are normal. Older adults, vegetarians, vegans, and people with absorption problems face a higher risk of deficiency and should consult a healthcare provider before starting supplementation.
Huffington Post

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