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Nakae J, Kato M, Murashita M, Shinohara N, Tajima T, Fujieda K

I myself have bad histamine intolerance, and over the past few months it's started seeming more and more likely that I also have some degree of mast cell activation syndrome

Homocysteine can also be produced by the metabolism of excess methionine

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In the absence of coenzyme B12, tetrahydrofolate cannot be regenerated from its inactive storage form, 5-methyl tetrahydrofolate, resulting in functional folate deficiency