First Nation people traditionally ate salmon, a great source of marine omega-3 fatty acids
DietDoctor Andreas Eenfeldt recently interviewed Jay Wortman, M.D., and posted it at his blog. Dr. Wortman apparently cured his type 2 diabetes with a low carb diet. The interview doesn’t reveal how many carbohydrate grams Dr. Wortman eats daily, but I’m guessing under 60 g, perhaps as low as 30. He avoids sugars and starches.
Dr. Wortman also did research on application of the ancestral diet (low-carb) among aborigines on the west coast of Canada. I think they call them First Nation people. The low-carb diet helped them get off diabetes and high blood pressure drugs while losing excess weight. Dr. Wortman mentioned the diet improved heartburn, too. Folks who go low-carb frequently report an improvement in heartburn. That’s even been studied scientifically.
Diabetic Mediterranean Diet 