Everybody is going to have a theory on this one. Here's mine:

Low fat eating means you have to EXERCISE to burn off the carbs. Look at all the exercise videos, exercise machines, health clubs, self-help books, low fat cookbooks, kewl exercise clothing, top 'o the line running shoes, high performance bicycles, personal trainers, that have cropped up in the last 20 years ...... they all have a *steak* in YOU eating LOTS of PASTA - they are COUNTING on it. Can you imagine where their businesses would be if the word got out that *it's possible to lose weight in front of the TV eating pork rinds *?

Then there is the American Heart Association and all the like associations who are partially government funded and so is their research. They took a hard look at those with heart conditions and came to the conclusion that those with major heart problems were also overweight.... so concluded that *eating FAT is bad* and then the next step in prevention of heart disease: *eating FAT makes you FAT*... and on and on like a vicious circle.

How are these associations going to go back and say "Oops - here's all the funding back, we were wrong - dietary fat's OK, it's the CARBS that are the problem sorry!"

I look forward to 20 years from now and see how exactly the world looks at food....