Yes, living far enough north is a good reason to suspect you may be deficient -- something folks seem to not like hearing when I say it. There are quite a lot

Yes, living far enough north is a good reason to suspect you may be deficient -- something folks seem to not like hearing when I say it. There are quite a lot of people who have good reason to believe they may be deficient. But there seem to never be enough qualifiers to make anyone on the internet happy. My above statement is as accurate as I know how to make it and I can't readily think of anything I would change about it, in spite of how poorly it seems to have gone over with folks here.