Walnuts improve blood vessel function in type 2 diabetes

This study documents a significant improvement in blood vessel function (specifically their ability to relax and open up to allow blood to flow freely) when 56 grams of walnuts were added to the diet of the study subjects. Both the study cohort and the control group (who did not consume walnuts) were allowed to eat freely (ad libitum) otherwise. Their conclusion: "A walnut-enriched ad libitum diet improves endothelium-dependent vasodilatation in type 2 diabetics, suggesting a potential reduction in overall cardiac risk."