I hope you invite Dr. Leora Pinhas to address your committee. She'll explain it to you in great detail. She is a biostatistician. In brief, and you'll get her to explain it in more detail, her read on the epidemiology is that rates of disordered eating among children are twice as high as rates of obesity, and obesity is the epidemic and disordered eating is ignored. That's the short version of what she would say.
On November 28th, 2013. See this statement in context.