source：R Shimada et al. Food Funct., 2016, 7, 4655
Diabetes is a chronic adult diseases characterized by an abnormally high blood sugar (glucose) level. This condition is caused by the inability of the body to properly convert glucose into energy, owing to a decreased production of a hormone called insulin. A prolonged high blood sugar level can increase the risk of complications. Thus, persistent damage to glomerular capillaries of the kidney can lead to diabetic nephropathy, and damage to blood vessels in the retina may lead to diabetic retinopathy. Suppressing the increase in the blood sugar level is effective not only in preventing the development of new complications but also in slowing down the progression of complications that have already developed.