The vegan lifestyle will contribute quite a bit.
Now that the methyl forms (activated) of both folic acid and B12 are available and inexpensive, there is no reason to use cyano at all.
There is quite a bit of research coming out of India on this subject...in fact before the research here in US... because of the vegan lifestyle.
One can only get B12 from animal sourced foods. Veggies do not supply it.
If you search Google you will find articles like this...using keywords --B12 deficiency India---
http://articles.timesofindia.indiati...cts-deficiency
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Weezie looking at petunias 8.25.2017
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