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Methionine An essential amino acid not produced by your body and can only be gained through ingestion
Methionine in the form of s-adenosyl methionine (SAMe) may have essential roles in hepatocyte metabolism 4
But all that work can be undone in seconds with a sloppy reconstitution
Having a lack of intrinsic factor (IF) , a substance that binds to B12 so it can be absorbed into the bloodstream (5)
Vitamin B12 is not produced by our body, it is obtained from food in our diet
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