Earlier quoted context omitted.
I have a natural b12 deficiency and can’t eat a vegetarian diet right now because of it. At the same time lactose intolerance runs in the family (though I don’t have much of a problem wth it). My doctor ordered me to eat more red meat. The difference in my overall well-being has been exponential over the past two years because of it.
How did you discover you had a deficiency?
As an aside; I ate a vegan diet for 2-3 years and my B12 was fine. That’s not to say it would’ve been fine 2-3 years later, though.