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And it activates heat shock proteins, among other things

In this cycle, vitamin B 12 is a necessary cofactor for methionine synthase, an enzyme involved in the methylation of homocysteine to methionine

The ferrous salts are readily absorbed in the upper gut, by direct dissolution and absorption of the ferrous iron by the bloodstream

Carcinogenesis 1990

Methylcobalamin B12 for energy, mental clarity, methylation, and nerve support administered by Kelly Belkoff, BSN, RN at our Liberty Lake clinic

This suggests that eating foods high in sulfur and sulfur-containing amino acids could also help glutathione production, as a lack of cysteine is thought to be its main bottleneck [41]