I would rate this a 10 for the information contained in the film.

But I'd rate it a 2 for filmmaking.

But the information is more important, thus the non-averaged score of 8.

This is one of those movies where you have such amazing and important information being given to the viewer, but it's done in such a badly constructed way that it's difficult to watch. The narration is about as boring as any I've every heard. There's no narrative line, so to speak. The filmmaker had no idea how to tell the amazing story he was trying to tell. And the sound is truly awful at times. But that said, the information contained here is something we ALL should see and hear and understand. So, if you put it on, and are immediately turned off as to how bad it is, stick with it. You will learn how to live a longer healthier life, and for that we can forgive the bad filmmaking.