"There is more scepticism about the claims made for the connection between weight and disease, and about the idea that fat is a chosen state. People do not choose to be fat in any meaningful way; most of those who try to change their body mass fail."

Sorry, and I don't mean to be cruel, but the plain fact is as my uncle, who was a prisoner of the Japanese said "There are no fat people in a prison camp". He knew very well the relationship between calories consumed and weight. he would laugh at the above statement.