Being a priority is a good thing! At any rate, all the luck. Chronic illness and unexplained symptoms are hell, and I know for me when they've been able to point to A Definitive Thing it's been a weight off, even if the thing turns out to be bad.

It wouldn't surprise me if vitamin D was a factor. Despite being an excellent cook (he used to work in food service), he is completely indifferent to food and lives off smokes.