Universal self-esteem issues

I was reading an article about eating disorders in Japan and I found it pretty interesting. Japanese people tend to have slimmer body types so I didn't realize that they had diet pill ads like we do in the US. (I wonder if they have clinislim review websites too or are their diet ads all in print?) It must be very difficult to weigh so little yet think you are so fat. Granted, there are skinny little things in the US that think they are huge too. I just didn't know how universal that feeling is.