Yeah, there are some people who the environment can be a killer for. My brother, who's part Vietnamese, has had a lot of issues with living in the north-west (he recently moved to Hawaii). I tend to find that, even as a resident up here who can't handle a whole lot of sunlight, I tend to be vaguely depressed and lame for a few weeks at the end of summer until I get used to the really gray, rainy weather and have to take vitamin D.