Iqembu lamazwe ngamazwe lososayensi lithole ukuthi ukuthatha amaprotheni ezilwane ekudleni kusiza ukunciphisa isikhathi sokuphila komuntu, futhi amaprotheni emifino ayandisa. Iphepha lesayensi lashicilelwa kujenali yesayensi ebizwa ngokuthi “I-JAMA Internal Medicine”.
Abacwaningi abavela eNyuvesi yase-Harvard baqedile ucwaningo olukhulu lapho bahlola khona ukuhlaziywa kwe-meta yedatha etholwe ngesikhathi socwaningo lwezempilo lwe-131 ochwepheshe bezokwelapha abavela eMelika (342% yabesifazane) "Isifundo Sezempilo Yabahlengikazi" (isikhathi sokulandelela se-64,7 iminyaka) kanye Nocwaningo Lwezemisebenzi lweqembu labasebenzi bezempilo (inkathi yeminyaka engama-32). Ukuthathwa komsoco kwaqashwa ngemibuzo enemininingwane.
Ukudla kwamaprotheni okumaphakathi kwakungu-14% wengqikithi yamakholori eprotheni yezilwane kanye no-4% wamaprotheni ezitshalo. Yonke idatha etholiwe yacutshungulwa, ilungiselelwa izici eziyingozi eziyinhloko ezivela ngokuphathelene nokudla kanye nendlela yokuphila. Ekugcineni, imiphumela yatholwa, ngokusho ukuthi ukudla kwamaprotheni ezilwane kuyisici esikhulisa ukufa, ikakhulukazi ezifweni zesimiso senhliziyo. Amaprotheni emifino, nawo, avunyelwe ukunciphisa ukufa.
Ukushintsha amaphesenti amathathu awo wonke ama-kilojoule ngeprotein yemifino kumaprotheni enyama egayiwe kwehlisa ukufa ngo-34%, kusuka enyameni engagayelwanga ngo-12%, emaqandeni ngo-19%.
Izinkomba ezinjalo zilandelwa kuphela kubantu ababhekene nenye yezinto eziyingozi kakhulu ezivela ebukhoneni bemikhuba emibi, isibonelo, ukubhema, ukusetshenziswa njalo kwemikhiqizo yotshwala, isisindo esiningi kanye nokuntuleka kokuzivocavoca umzimba. Uma lezi zici bezingekho, khona-ke uhlobo lweprotheyini esetshenzisiwe aluzange lube nomthelela esikhathini sokuphila.
Inani elikhulu lamaprotheni emifino litholakala ekudleni okufana nalokhu: amantongomane, okusanhlamvu okusanhlamvu.
Khumbula ukuthi esikhathini esingengakanani esidlule, ososayensi benza olunye ucwaningo emhlabeni wonke, ngokusho ukuthi ukudla inyama ebomvu, ikakhulukazi inyama egayiwe, kuthinta ukwanda kokushona kwabantu ngenxa yomdlavuza, ngokuvamile umdlavuza wekoloni. Mayelana nalokhu, inyama ecutshungulwayo izofakwa kuQembu 1 (ama-carcinogens athile) oHlu lwemikhiqizo equkethe ama-carcinogens, nenyama ebomvu - kuQembu 2A (ama-carcinogens angenzeka).