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When absorption issues are a factor, recovery from a deficiency may take longer, unless B12 is supplied directly through injections
They appear most strongly during the first 1-2 weeks after each dose increase, then gradually subside as your body adapts to the new level of receptor activation
Foods that contain high levels of methionine include cheese, eggs, fish, meats, spinach, potatoes, Brazil nuts, sesame seeds, and select other plant seeds
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Cell Biology International Reports, 7(9), 543549
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