Ukuxhomeka kobulili bomntwana ngezici ezihlukahlukene

Isisindo somama, ukungcola kwemvelo kanye nemibandela yezomnotho kungathinta ubulili bendodana engakazalwa. Uyomangala, kepha ukuxhomeka kobulili bomntwana ngezici ezihlukahlukene akuyona inganekwane. Ungakwazi yini ukubikezela ubulili bomntwana wakho? Futhi ingabe kungabikezelwa? Funda ngakho ngezansi.

Umfana noma intombazane? Imvelo ayihlangabezani nezifiso zabazali. Labo abakholelwa ukuthi amathuba okubeletha intombazane noma umfana alinganayo ayiphutha ngokuyisisekelo. Akukaze kube khona isilinganiso phakathi kwabafana namantombazane asanda kubalwa kwaba ngu-1: 1. Umuntu ohlala ezalwa njalo, omunye umuntu ungaphansi. Izici eziningana zithinta lokhu kuguquka.

Isisindo somama ngaphambi kokukhulelwa sinethonya eliqinekile ekucansini komntwana. Abacwaningi base-Italy babheka abesifazane abangu-10 000 abakhulelwe. Imiphumela yabonisa ukuthi abesifazane besisindo esingaphansi kuka-54 kg, kaningi babeletha abafana kunabanye.

Ubulili bomntwana bungathintwa yi-anomalies ehlukahlukene yemvelo nezinhlekelele zemvelo. Ngakho emazweni anesomiso futhi, ngenxa yalokho, indlala, amantombazane azalwa kabili kaningi. Abacwaningi baseMelika bathola ukuthi ngemva kokuphela kwesidlo esikhulu, isomiso nezinye izinhlekelele zemvelo ngokuvamile, zimbalwa kakhulu abantwana abesilisa abazalwa.

Ikhwalithi yesidoda kanye nobulili bemibungu ayithonywanga ngokuntuleka kwesondlo kuphela, kodwa nangezinye izici ezihlukahlukene. Ochwepheshe nabo baphinde bashintsha ushintsho oluphawulekayo ekubaleni kwabafana namantombazane eMpumalanga Jalimane ngemva kokuwa kweBell Berlin. Ngo-1991, bazalwa ngamantombazane angamakhulu ayizinkulungwane ezingaphansi, futhi ososayensi bachaza lokhu ngokuthi ngonyaka lo nyaka abantu bakhathazekile kakhulu ngenxa yezinto ezithile - izenzakalo zezombangazwe. Ngemuva kokuzamazama komhlaba nezinhlekelele zemvelo, inani labafana liyancipha. Ukucindezeleka kuboniswa futhi njengesizathu esiyinhloko.

Isilinganiso sobulili sithinta inkathi. Ekukhulelwe ngesikhathi sekwindla abafana abaningi bazalwa, futhi amathuba okubeletha intombazane aphezulu uma ukukhulelwa kwenzeka kusukela ngoMashi kuya kuMeyi.

Ama-embryus abesilisa anesisindo esiteji sokungena esibelethweni. Amaseli e-embryo wesilisa ahlukaniswe ngokushesha, futhi zonke izinqubo ezihlobene nokusetshenziswa komzimba zisebenza ngokushesha. Kodwa ngokuhlukaniswa okusheshayo kwamaseli, amathuba okuba ne-anomalies ekuthuthukisweni akhula. Umphumela we-toxins nezinye izinto eziyingozi ziyanda. Ngakho-ke, ngesikhathi ukhulelwe futhi ngokushesha ngemva kokuzalwa, amathuba okuthuthukiswa okungavamile kwabafana mkhulu.

Ososayensi basaphikisana ngokuthi ubulili bomntwana buxhomeke ekungcoleni kwamakhemikhali kwemvelo, kungakhathaliseki ukuthi kuthinta isilinganiso phakathi kwamantombazane nabafana abazalwa. Abacwaningi baseMelika baqiniseka ukuthi lezi zici zithinta isilinganiso phakathi kwezinsana. Ngokwesibonelo, eminyakeni eyisikhombisa ngemuva kwengozi ehilela ukukhululwa kwe-dioxin esifundeni, kwakukhona amantombazane amabili abafana abafana.

Ukuthembela ezintweni ezihlobene nezinto ezithile sekuye kwafakazelwa ososayensi. Zithinta futhi umuthi futhi zivimbele ukuthuthukiswa kombungu embelethweni. I-Nicotine ingenye yalezi zinto eziyingozi. Abacwaningi baseJapane nabaseDenmark bathola ukuthi ukubhema ngaphambi kokukhulelwa futhi ngesikhathi sokukhulelwa kunciphisa amathuba okuzalwa kwabafana. Futhi uma bobabili abazali bebhema, amathuba okubeletha kwentombazane ayingxenye yesithathu uma kuqhathaniswa nabantu abangabhemi.