Uma ufuna ukuzuza ekuthelelekeni okuhle kukashukela emangqamuzaneni futhi ngaleyo ndlela ujabulele amandla azinzile usuku lonke, kufanele ubheke inkomba ye-glycemic (GI) yokudla. Lokhu kugwema ukudlula esigabeni se-hypoglycemia esilandelwa ngokungenakugwenywa yi-hyperglycemia, kuphinde kube yi-hypoglycemia. Ushukela osekudleni kwethu udlula ngokushesha noma kancane odongeni lwamathumbu ukuze ugeleze ungene egazini bese uya emangqamuzaneni lapho ungena khona ukuze ushiswe noma ugcinwe. Yinkomba ye-glycemic (GI) enikeza isilinganiso salesi sivinini.

Un ukudla okune-GI ephansi noma emaphakathi kunenzuzo ngoba isiza ukulawula ushukela wegazi (= izinga likashukela egazini). a ukudla okuphezulu kwe-GI yehlisa i-insulin ekhiqizwa amanyikwe (= i-hormone ephusha ushukela engqamuzaneni futhi yehlise amazinga kashukela egazini) futhi ikhuthaze “inkanuko” kanye nokuzuza isisindo ngokugcina ushukela ongashisiwe.