>>17987283In many cases, it's a diet high in processed foods and/or having yo-yo'd up and down in weight a few times. I'm older and chaperone younger kids around. It's astounding the number 16 year old girls whose bodies are conspicuously destroyed from those two I just mentioned. Forty years ago there WERE girls like that but it was maybe 2-3 in my whole graduating class in high school.