Obesity is a disease

To imply that every obese person is "food addicted" is actually just another excuse, this might come as a suprise, but skinny people like to eat too! Just as the people at the pub on Friday and Saturday night are not necessarily addicted to alcohol. It's only really true in a minority of cases.

Not being willing to say, "no I've eaten enough, I don't want dessert" is not proof of an addiction, it's just proof that you value your health less than a cake.