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Although some research it may actually possess anti-cancer properties

[DOI] [PubMed] [Google Scholar] 27.Caplan RH, Davis K, Bengston B, Smith MJ

But rodents are not humans, and "no obvious toxicity in rats" does not automatically translate to "safe for long-term human use." Human Evidence: How Much Do We Actually Have

Holotranscobalamin, a marker of vitamin B 12 status: analytical aspects and clinical utilityAm J Clin Nutr2011;94:359S-65S
