There is little point trying to paraphrase Carrie Arnold. Her article for Slate is pretty self-explanatory and Laura Collins has already covered the arguments. Meanwhile, I am toe tapping in anticipation of the arrive of Carrie's new book.
Just the editorial reviewers (let alone the reviews) are enough to plan two days off just to read it.
“Carrie Arnold has done an outstanding job of translating complex and difficult research findings into understandable concepts. This book should be an essential guide for individuals with eating disorders and their families who would like to know more about how brain processes contribute to eating disorder symptoms.” - Walter Kaye MD, Professor of Psychiatry and Director, University of California, San Diego, Eating Disorder Research and Treatment Program, USA
Or as my friend, B, puts it
"No, I am not a perfectionist with control issues who is overly influenced by thin models in the media dealing with overbearing parents you douchebag. I have a $%#@#$%^&&%$#$%$#$ing biological/neurological/somecrapgoin'on disorder"