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Is B12 Enough If I Still Feel Tired After Good Sleep

An inside view of biological aging

Another limitation is that the time scale of this study (3 months to 5 years) is different than the time scale of the Adams 2011 study (3 months) and Adams 2018 study (we compared with the results at 3 months)

[DOI] [PMC free article] [PubMed] [Google Scholar] 246.Littlejohn G., Guymer E
