I can see a connection, or line of thought here, but if that was so (which is possible) then it also could be that Bipolar could be a light exposure disorder as well. I'll look at any type of explanation and take it for what its worth. For myself I believe it's highly related to my food intake. I would have thought that nonsense before, but the evidence in my case is stacking up.

I don't like "mood disorder" either, it certainly doesn't paint a very clear picture of what is going on for me.