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[DOI] [PubMed] [Google Scholar] 80.Funato T., Sato Y., Fujiki S., Sato Y., Aoi S., Tsuchiya K., Yanagihara D

Human experience reports typically describe gradual improvement over weeks rather than immediate changes

Low levels of B12 cause a reduction in the formation of red blood cells

Benefits often build over 68 weeks with consistent use