in·su·lin 
/ˈɪnsələn, Brit ˈɪnsjʊlən/ noun
/ˈɪnsələn, Brit ˈɪnsjʊlən/ noun [noncount] medical : a substance that your body makes and uses to turn sugar into energy ◊If your body does not produce enough insulin, you will develop diabetes.
▪ His insulin level is too low.
▪ His insulin level is too low.
