the reltionship between B12 defficiency and MS is still not known. I's true that both diseases can cause neurological symptoms, but what is not knon, is whether they have anything at all to do with each other.
I was tested for the B12 defficiency a long time ago and was A-OK. So my MS was not a B12 illness in disguise.
Remember, this is a business report, so the price of B12 is going up, as we speak/type..