We've been doing variations of "educate the general public about healthy dietary choices" for roughly as long as the obesity epidemic has been around. Shouldn't

We've been doing variations of "educate the general public about healthy dietary choices" for roughly as long as the obesity epidemic has been around. Shouldn't it have worked by now, if it were going to? As purportedly modern, scientific, data-driven societies, why do we keep engaging in this impotent self-flagellation?