Vitamin b12 is pretty much recommended by most vegan doctors but how do you reconcile that with the conclusions of this study?
[Circulating concentrations of vitamin B12, based on pre-diagnostic blood samples from the LC3 consortium on over 5,000 case-control pairs, were positively associated with lung cancer risk, and in contrast to the VITAL study, this association was consistently seen across sexes, former and current smokers, time from blood draw, and geographic region…. these findings support the hypothesis that higher circulating vitamin B12 concentrations increase the risk of lung cancer.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6642017/#:~:text=The%20MR%20analysis%20based%20on,CI%3D%201.00%2D1.16).)
I do currently supplement 500mg b12 once a week and have been doing so for many years. But it never sat right with me. Why would a healthy diet require supplementation?
Anyone here NOT take b12 supplements?
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