根據發表於糖尿病護理(Diabetes Care, Published online ahead of print, doi:10.2337/dc09-1156) “Effects of Walnut Consumption on Endothelial Function in Type 2 Diabetics: A Randomized, Controlled, Cross-Over Trial “的研究報告,在中年糖尿病患者的飲食補充56克的核桃,可大大改善血管的內皮細胞功能,並可降低膽固醇。