What happens when you do "Supersize Me" in reverse? Why, you get a documentary like "Raw for 30 Days." The film-makers of "Raw" got six type 2 diabetics with less than stellar lifestyle habits and persuaded them to switch out hamburgers and fried chicken for a raw, whole foods diet consisting of all-organic, all-vegan foods. Mmm mmm.

You can't see the movie quite yet. But you can see the preview. Just click on over to the "Raw for 30 Days" website. My source says the preview can also be viewed on YouTube or Google Video. The finished product is now in post-production and should be released in time for Spring 2008 film festivals.

The documentary was directed by Sundance Film Festival-winner Aiyana Elliott, but the concept was created by the executive producer, Mark Perlmutter. The idea is to demonstrate that type 2 diabetes can be reversed "naturally" - that is, without the aid of a battery of prescription drugs. Says Perlmutter, "The release of our nine-minute preview may be the first exposure some have to a greater understanding of controlling, if not conquering the disease."

Okay, so the premise is a little shaky. For one thing: how much can be achieved in only thirty days? For another: it's changing lifestyle habits and maintaining them over time that's key in reversing symptoms of t2 diabetes or pre-diabetes. But why be a party-pooper? After all, raising awareness about diabetes is a good thing. I would definitely like to see this film.

Yes, whole foods are good for your health. But maybe even better than you imagined. A Swedish study has concluded that a "Stone Age" diet is great for the health and could even prevent Type 2 diabetes. So what did people eat in the dark depths of prehistory? Well, a variety of foods, but nearly all of it was high in fiber, low in fat, fresh, and nearly unprocessed.

Scientists took a small group of fourteen glucose intolerant heart patients and put them on the diet of a lifetime: lean meat, fish, fruits, vegetables and nuts. This, it is assumed, is the sort of diet consumed by our Stone Age ancestors - hunter gatherers who lived around 70,000 years ago, long before the emergence of agriculture. Meanwhile, another group of patients with similar health issues were put on a supposedly healthy "Mediterranean diet" rich in whole grains, dairy, fruits and vegies, and unsaturated fats. Well, you guessed it. After twelve weeks, the researchers found those on the Stone Age diet had much more stable blood sugar levels and were better able to process carbohydrates without such major blood sugar fluctuations. In fact, all the Stone Age patients had normal blood glucose levels by the end of the study and also dropped a few pounds too. Those on the Mediterranean diet, however, experienced hardly any changes at all.

Admittedly, this is a very small-scale study. But the results are interesting nevertheless, and, I'd wager, not a huge shock to well-informed diabetics who understand the importance of curbing carb intake for better health. On the other hand, I was interested to note that the author of the study, Dr. Staffan Lindeberg, played down the "carb as culprit" angle, and instead emphasized the following simple rule for better health: avoid modern, processed foods.