Next time you decide to snigger at someone you think it fat/thin/ugly/short/weird keep a thought in your mind for what might be going on in their head.
People judge on external appearance. There are evolutionary reasons for this, of course, we want to mate with those who are regarded as fit in order to maximise the chances for our offspring. It doesn’t automatically mean that those who don’t fit these criteria don’t feel.
As a footnote to the article linked above, I’d just say that skinny people don’t feel any less insecure.
[via Eros Blog.]