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Anaphylaxis following a B12 injection has been documented in medical literature, particularly in patients with a sensitivity to cobalt or cobalamin compounds
By contrast, the expression of fatty acid synthase ( Fas ) in liver, for example, was not decreased in Insr P1195L/ +/HFD mice (Supplementary Fig
Especially for those who cannot absorb all of the B12 they ingest due to an underlying condition like inflammatory bowel disease, says Mary Wirtz, a nutrition consultant for Mom Loves Best
Science 333 , 233238 (2011)
Needle selection matters If you are drawing from a vial, you have control over needle selection