Several clinical studies show that different extracts/sites of D. nobile have been used to reduce fasting plasma glucose (FBG), human hemoglobin A1c (HbA1c), and glycosylated serum protein (GSP), regulate dyslipidemia, improve antioxidant capacity, repair islet injuries, improve insulin resistance, etc. D. nobile has also been used to reduce the negative effects of oxidative stress on the liver and kidney tissues of diabetic mice by increasing the activities of the antioxidant enzymes SOD, CAT, and GSH. This evidence concerns the gene CAT and metabolic syndrome.