I was intrigued by a recent Swedish study reporting that people on a so-called "Stone Age" diet had more stable blood sugar levels than those on a Mediterranean diet. An intriguing claim, because it's so often said that Mediterranean-style eating is super-healthful. Let's also admit it is a delicious way to eat: yes, pasta and bread is there, but it's balanced out by tons of fresh fruits, vegetables, fish and olive oil. The Stone Age way is a bit more spare: we're talkin' meat, fish, and lots of whole grains, berries and nuts. Nary a sliver of Parmesan in sight.

However, the results of yet another study, this time from Australia, indicates Mediterranean-style eating is a good choice, especially for diabetics. Researchers from the University of Melbourne say Mediterranean-born immigrants in Australia are less likely to die from heart disease than other Australians. The researchers have concluded it's all down to dietary patterns. More than forty thousand people participated in the study over a period of ten years. The numbers revealed those who ate the most Mediterranean-style foods had a thirty percent lower risk of dying from heart disease. For diabetics, the researchers speculate, the benefits could be even higher, reducing the risk of death due to ischemic heart disease.

Results have been published in The American Journal of Clinical Nutrition. Visit Reuters for a discussion of the study.

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.

Nutraceutical refers to foods claimed to have a medicinal effect on human health. The American Diabetes Association says individuals at risk of developing diabetes can make changes in their diet and increse their level of physical activity to reduce their risk. The following mentions a few foods and supplements that are your friends in the fight against diabetes.

You've probably heard a million times the benefit of soluble fiber. It lends a big helping hand by slowing carbohydrate absorption. Easy sources of soluble fiber include: oat bran, nuts, barley, flax seed, fruits like oranges and apples, and vegetables like carrots. Another nutritional gem is coffee! Well, more specifically chlorogenic acid, the antioxidant found in coffee. It slows the release of glucose into the bloodstream after a meal. Caffeine counteracts this effect, so diabetics are better off drinking decaf. Barley malt has similar blood glucose lowering effects as metformin, without the side effects. Some say barley malt is to beer as grapes are to wine. Barley malt extract (available in powder and liquid forms) is also used medicinally as a bulking agent to promote bowel regularity.

Other honorable mentions include: magnesium, chromium piccolinate, conjugated linoleic acid, bitter melon and our beloved cinnamon. Nutraceuticals would likely have substantial diabetes-preventive efficacy, and presumably could be marketed legally as aids to good glucose tolerance and insulin sensitivity.

Central obesity is associated with insulin resistance through factors that are not fully understood. Researchers studied the effects of three different diets on body fat distribution, insulin sensitivity and peripheral adiponectin gene expression.

Adiponectin is secreted from fat tissue into the blood. The presence of adiponectin can result in improved insulin sensitivity and glucose tolerance, and can assist in mobilizing sugar out of the blood The hormone plays a role in the suppression of the metabolic derangements that may result in type 2 diabetes, obesity, atherosclerosis and non-alcoholic fatty liver disease.

The study involved 11 volunteers who were the offspring of obese type 2 diabetic patients with noticeable abdominal fat deposits. The volunteers were considered insulin resistant and they maintained average hemoglobin A1c levels of greater than 6.5% without medication. All subjects underwent three dietary periods of 28 days each in a crossover design: a) diet enriched in saturated fat (SAT), b) diet rich in monounsaturated fat (MUFA; Mediterranean diet) and c) diet rich in carbohydrates (CHO). Weight, body composition and resting energy expenditure remained unchanged during the three dietary periods. However, when patients were fed a CHO-enriched diet their fat mass was redistributed towards their abdominal region and their periphery fat accumulation decreased compared with a diet MUFA-rich and high SAT diets. Changes in fat deposition were associated with decreased levels of adiponectin after meals and lower insulin sensitivity.

The results of this study conclude a diet rich in monounsaturated fat prevents central fat redistribution and a decrease in after meal adiponectin levels. These findings support the belief that a carbohydrate-rich diet in insulin-resistant subjects exacerbates the insulin resistance. The moral of the story is: to enhance insulin sensitivity - look for a diet rich in monounsaturated fats and less dense in carbohydrates. Chances are if you've tinkered around with your food pyramid - you already knew the results of this study.