Comments like the following (pulled from the article): "Experts warn eating plans that are too rigid usually don't work..."  This is a major issue. Though we know most people lack the willpower to maintain a sensible diet to save their life, articles written by so-called "experts" always seek to provide an easy out for the reader whose feelings may be hurt about being a bit uncomfortable. I will point out that a lot of people who are obese know what to do, they just lack the will to do it consistently.