Dietary health supplements have increasingly used in the prevention and treatment of chronic disorders. During the previous decades, fenugreek (Trigonella foenumgraecum) seeds have been reported to have hypoglycemic and cholesterol lowering effects when used in type 1 and type 2 diabetes mellitus patients, and in experimental diabetic animals. The aim of this paper is to review fenugreek research fi ndings relevant to its use in diabetes.There is convincing research evidence suggesting that fenugreek can improve hyperglycemia and has a protective effective against diabetic complications through immunomodulatory, insulin stimulation, and antioxidant effects, enhancing adipocyte differentiation, inhibition of infl ammation in adipose tissues, and preventing or lessening pancreatic and renal damage. Many of the benefi cial effects of fenugreek in diabetes have been attributed to four bioactive components including diosgenin, 4-hydroxyisoleucine, furostanolic saponins, and the fi ber in fenugreek.