Darlindeb25: "I take 5000mcg daily of B12, and it has significantly slowed the progression."

How can you tell (a) the progression has been significantly slowed and (b) the slowing was due to B12?

I've increased my B12 to 2000 mcg now, but am also "playing around" {my PT's directions} with the TENS unit. So I have 2 variables in play that I can control. Meanwhile, I seem to be more reactive to rain storms. And yet -- some days pain doesn't go above 5, others it knocks hard on 8's door. Overall, I can see the steady progression -- I long for the days I had a slight tingling in my toes... sigh. With so many variables, I don't know how to tell which one is responsible for any improvement that might occur.