Ambiri aife timakhulupirira kuti ndi kusowa kwa vitamini mbale, zipatso, zitsamba, ndi ndiwo zamasamba m'zakudya, n'zotheka kulipira mavitamini ndi zowonjezera zosiyanasiyana, zomwe ndi zazikulu.
Komabe, monga momwe zasonyezedwera ndi kafukufuku waposachedwa, ofufuza ochokera ku yunivesite ya Tufts, zakudya zokhazokha zomwe zili muzakudya zachilengedwe zimatha kupindulitsa thupi, ndipo zowonjezera sizigwira ntchito.
Ofufuzawa adaphunzira pafupifupi anthu a 27,000 ndipo adapeza kuti zakudya zina m'zakudya, osati zowonjezera, zingachepetse chiopsezo cha kufa msanga. Choyamba, izi zimagwira ntchito ku mavitamini A ndi K komanso magnesium ndi zinc.
"Pali anthu ambiri omwe amadya mopanda thanzi ndipo amayesa kubwezera izi mwa kumwa mavitamini. Simungasinthe zakudya zopanda thanzi ndi mapiritsi odzaza manja. Njira yabwino ndiyo kudya zakudya zopatsa thanzi zomwe zimakhala ndi masamba atsopano, zipatso, tirigu, mtedza, ndi nsomba. Ndi bwino kuposa kugwiritsa ntchito ndalama zowonjezera chakudya”, – ndemanga zotsatira za kafukufuku, Pulofesa Tom Sanders.