I don't know about you, but one aspect of bipolar I really struggle with is the part where things seem more important than they really are. There is a word for it I am sure. It's not grandiose, because I'm not thinking about how imprtant *I* am. But I get so wrapped up in little things. Every piece of information seems like a sign. Every little thing becomes part of a bigger puzzle for me to put together and THEN I will have all the answers! I attach all this incredible meaning to things where there really isn't any. (But I only say, 'there really isn't any,' because that is what I know on some level, from what my therapists tell me. As far as I am concerned, to me it FEELS and seems as though they MUST be that important!!)
Anyway is this the same sort of thing for you with the envronment and the B12 stuff and whatever? Do you feel really driven by it and as though you are the only one who really understands it? Like maybe you have been placed on the earth to show people the answer? Yeah supposedly that's mania. *shrug* I only mention it because I know the feeling so well!
Although I do happen to think bipolar brains are somewhat superior, you know

We are more sensitive, we communicate better, we empathize better, and we are more creative. Mental illness be damned, we're just higher evolved!