Well, a lot of people get into Medical complication and experience illnesses such as diabetics, heart problem and more tendency to cancer because they are too fat. However, no one that I've heaver heard of died simply from over eating. Being too skinny will kill you much faster and cause much more medical problems then being too fat.
It's sad to think that out of fashionable and aesthetic reasons our culture put a lot of emphasis on the medical problem caused from being fat then those caused from being slim.
A lot of girls who aren't anorectic still experience some medical problems out of dieting too much or not eating enough, such as irregular period, Anemia, low blood pressure, osteoporosis in adulthood and more. I find it really sad that so many mass media tools who keep warning people from being too fat don't really bothering stating that eating healthy doesn't just equal eating less and being thin, but also, making sure your body gets everything it needs.
Anorexia had been documented for about 300 years now, however, it's only with the spread of this worship to thinness and youth that it's exploded into a mass epidemic.