I ran across this report and found it interesting although it won't solve any of our issues I thought I'd share anyway. Microbes in soil not only manufacture Vitamin B12 but the whole microbe and animal community depend on it just as we do. I wonder if a microbe can have PA? Maybe only if they can find a Microbe GP willing to diagnose it!!
Vitamin B12: Power broker to the microbes
sciencedaily.com/releases/2...
Enjoy