Introduction

If you're concerned about methylation-related issues, you would want to be careful with methylcobalamin supplementation in a way that you would not need to be careful about hydroxocobalamin supplementation. If you don't have a specific methylation-related goal, then I think hydroxocobalamin is the default because that's the sort of like metabolically neutral B12 in that it's not predisposed to any particular system, and it's not going to affect any system in a specific way apart from just being nutritional B12.

Then the second thing is “if you had MTHFR, is it dangerous to supplement with cyanocobalamin?” It doesn't matter. I don't think MTHFR has anything to do with methylcobalamin really.

If you don't have malabsorption of everything else, you should look at the specific causes of B12 malabsorption, which are pernicious anemia and gastritis, including subclinical gastritis driven by H. pylori in the stomach.

This Q&A can also be found as part of a much longer episode, here:

Harnessing the Power of Nutrients

Recording and Transcript of Ask Me Anything About Nutrition | March 8, 2019

Watch now (159 min) | Below you will find the time stamps for specific questions, the relevant links, the private podcast audio version, and the transcript. The time stamps are available to everyone but everything else is reserved for Masterpass members. Learn more about the Masterpass…

3 years ago · Chris Masterjohn, PhD

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Harnessing the Power of Nutrients

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