Ngaphezu kwamavithamini amaningi nezakhi ezibalulekile, izithelo nazo zine-fructose. Lokhu kusolwa ukuthi kufakwe esiswini ngendlela yamafutha uma kusetshenziswe ngokweqile. Isithelo kuthiwa siyakhuluphalisa. Kodwa-ke, lokhu kunjalo kuphela uma udla izithelo eziningi ngaphezu kokunye ukudla kwakho futhi ngenxa yalokho udla ama-calories amaningi kunalokho owasebenzisayo isikhathi eside. I-Fructose, equkethwe ngokwemvelo esithelweni noma okunye ukudla, ngokuvamile ingabhekwa njengenkinga encane. I-fructose esetshenziswa njengesithako esodwa ibaluleke kakhulu, ngokwesibonelo njenge-sweetener kwezinye iziphuzo ezibandayo. Ukusetshenziswa ngokweqile kwe-fructose kuleli fomu kungaholela ezinkingeni zamathumbu, isibonelo.
Ama-apula, ubhanana, amagilebhisi nokunye akukwenzi ukhuluphale uma ukusebenzisela ukushintsha izingxenye zokunye ukudla, isibonelo, ucezu lukashizi noma isoseji ngesikhathi sasekuseni. Yiqiniso, ama-calorie engeziwe angashiswa futhi ngokuzivocavoca okwanele. Zama ukudla isithelo ekuseni noma ntambama futhi kusihlwa udle imifino. Izinga eliphakeme likashukela esithelweni likhuphula amazinga e-insulin futhi livimbele ukulahleka kwamafutha ebusuku.
I-roughage esithelweni (ikakhulukazi emakhasini) iphikisana nalokhu kwanda kwe-insulin futhi ikwenza uzizwe ugcwele. Kufanele futhi ukhumbule ukuthi izithelo ziqukethe inani elikhulu lezinto ezibalulekile - ngaphandle kwazo, umzimba uzontula okuningi.