My first reaction to this was "What is WRONG with people?"
But, as the psychologist wrote, many people say something inappropriate when seeing someone ill. And some people are just shallow and "clueless."
I had an uncle very much like that (my Dad's younger brother). The only things I remember growing up about the man was that he was all about showing off his newest house, newest car, and criticizing anyone who was not either 1) as wealthy as him, 2) as thin as him, 3) as well educated as him, or 4) looked anything different than what he perceived as attractive. Arrgghh!
Ohiocat, after reading your post, I realized you have a good way of looking at this. Maybe this kind of article will bring to the forefront the fact that people can be so obsessed with how we look, and never think about the fact someone may be ill! The other side of this is that someone would actually think someone so terribly thin "looks so good." What a twisted society in which we live...