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[DOI] [PubMed] [Google Scholar] 89.Yusri, K., Kumar, S., Fong, S., Gruber, J

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The role of mitochondrial DNA mutations in aging and sarcopenia: implications for the mitochondrial vicious cycle theory of aging

Their papers abstract could be interpreted to suggest that the B12 content in multivitamins was decreased by storage time, light exposure, temperature, and vitamin C

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The elderly (reduced absorption) Pernicious anemia Vegetarians / Vegans (low dietary B12) People taking metformin or acid reflux medications (PPIs) Post-bariatric or gastric-bypass patients Genetic variants in MTRR , MTR , or TCN2 What Has B12 Been Studied For