That is very interesting! I'll have to estimate my B6 from my earlier attempt at keto and the current food I'm eating. I was very likely deficient in B6 prior to attempting keto since I was not actually trying to have a balanced diet before, and when I first started keto I ate a lot of fish and some turkey and quest bars and small mixed salads with broccoli and vitamins, which all of that had less fat than protein.