The technical term is Body dysmorphic disorder. Bascially, it means the person simply thinks their body is defective. They see sexy super thin girls in the media and think they have to try and be like that. Most don't realize that even the models used for the pictures don't look that good or that thin. The human body is beautiful, but it is also imperfect. The youth today needs to be more healthy but less concerned with vanity.
exactly! (sorry but i dont have an answer) but my friend is like 90 pounds and she thinks shes fat even though shes like super-skinny! (but she uses me as an excuse. im 14, super-duper-skinny and weigh 64 pounds, but im not anerexic( or however u spell it) i just hav a very high metabolism! :)