Last year, Gina Kolata, in her shamelessly underthought review of Good Calories, Bad Calories, asked why, if low-carb was such an effective weightloss and management mechanism, had it not any effect on obesity rates.
The easy answer to that question was that while low fat had enjoyed massive governmental and medical support, low carb had experienced just the opposite: hostility, or at best, cautious ambivalence.
So to connect that back to reality, I noticed the handout my daughter (who is now in Kindergarten, and was a baby when I started low carbing) came home from school with a calendar of menus for September. There was a "Pyramid Puzzler" article that asked "How many pounds of potatoes does it take to make a pound of potato chips?" (the answer: 4).
It goes on to say that "Potatoes are one of the healthiest things you can eat, but potato chips are one of the least healthy."
So, right in the schools, at a very early age, they're being taught that potatoes are a highly healthy food (nutritionally that's not even close to correct, even if you aren't a low carber - potatoes bring little to the table but empty calories).
The day that low carb is being promoted in the schools for 2-3 decades, and has failed to the degree that low fat has, Kolata can write what she wrote. Right now, to low-carb, one must get support from the grassroots and actual dieters. Few public figures will endorse it, even when study after study after study confirms it as safe and effective.
They link to this website to back it up. It pimps grain, villainizes fats, the usual tap dance.