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Including small amounts of these foods a few times a week is a simple way to get started
Methylmalonic Acid (MMA) Test: Doesnt check B12 directly, but if MMA is high, it usually means your body isnt absorbing/using B12 properly, even if your B12 levels look normal
Raritan, NJ: Ortho-McNeil Pharmaceutical, Inc
However, advancements in supplement manufacturing have changed this landscape
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