RawDad wrote:Jeff,
Hope all is well with you. I thought I remembered reading here that the Methyl version of B-12 may not raise serum B-12 levels?
If so - do you recall the reference?
Thanks in advance,
Russ.
Thanks
There has been quite a bit of discussion over the last few years and several studies on which is the best form. It is like a ping-pong game. However, I don't recall one in regard to your question. Methyl is usually the one you see recommended and said to be these best form.
You may find stories (maybe even in these forums) of people having success (or not) with different forms.
Part of the problem is the industry is unregulated and you don't always know what it is in your pill.
For a while, methyl was being touted as the superior form, however, a 2015 comparison showed no benefit
https://www.ncbi.nlm.nih.gov/pubmed/25820384And this 2017 study showed it might be individual based on genes.
https://www.ncbi.nlm.nih.gov/pubmed/28223907And here is a recent review on veg/vegans
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5188422/On concerns with Cyano
viewtopic.php?f=7&t=58974&p=593839&#p593839In the end, my position has been get your levels checked, take a (hopefully independently tested) form and if what you are doing is not working, switch products or forms.
One thing I have noticed (and this is anecdotally and may be a result of genetic variations I cant test for) but I have seem similar level of cyano raise levels of B12 better then the others in the same individual.
Hope that helps
In Health
Jeff