And Naughton even roped in members of his family, interviewing his mother and his wife. One of my favorite lines from the film was when Naughton went into the bedroom where his wife was was reading a magazine on the bed. He asked her to tell us how much better their sex life was on his new diet.

She paused dramatically. And then she replied, "Are you really a moron?"

So we don't learn all the benefits of wise eating. But we can get the point. And Naughton not only lost weight but also improved his cholesterol numbers.

The best of anything shakes us up. And for me the really disturbing statement in this documentary was that statistics -- correlations -- of people who have a high normal BMI or are even overweight live longer than people whose BMI is at the low end of the scale. Like mine. I find that hard to accept, and of course I don't believe everything that I read or hear, but I will look into it for a future article here. Request: any leads to those studies or insights explaining them.

You can view the trailer for "Fat Head" on YouTube. The movie also has a website. And just a few days ago Amazon.com started to offer the DVD for as little as $11.72.

I bought one of the first copies. It was certainly worth the money for both the entertainment and information that I got from watching "Fat Head."