Does high B12 mean it’s not getting into the cell? | Masterjohn Q&A Files #171

<p>Question: Does high B12 mean it’s not getting into the cell?<br /><br />The right way to address that would be to measure serum or urine or both methylmalonic acid MMA, and that's a functional marker that's very specific to B12. If B12 was not getting into the cell, then methylmalonic acid is going to be high.<br /><br />If you would like to be part of the next live Ask Me Anything About Nutrition, sign up for the CMJ Masterpass, which includes access to these live Zoom sessions, a private discussion group, premium features on all my co...