Ukusela Ubisi Kungabangela Iimbini
Kukho iingcamango ezininzi malunga nezizathu zamawele . Ezinye iingcamango zisekelwe kwinzululwazi, kwaye ezinye ziyi-anecdotal. Yonke intsapho mhlawumbi inemfundiso yayo, kodwa enye eye yabhalwa kuyo kwiminyaka yamuva yintsebenziswano phakathi kokutya okuphezulu ebisi kunye nemveliso yobisi kunye nokwanda kwamawele.
Ngo-2006, isifundo sakhutshwa sichaza ukuba abafazi ababandakanya iimveliso zobisi ekudleni kwabo kwimihla ngemihlanu bafumana amawele ngaphezu koodade babo be-vegan.
Umxholo weMeyi ka-2006 weNgcaciso yeMicrothelo yoBubele iquka ingxelo evela kugqirha kwi-Long Island Yonyango yamaYuda ephethe isigqibo sokuba ukusetyenziswa kweziveliso zobisi kuphakamisa amathuba omfazi wokukhulelwa amawele. Uphononongo lwabhengezwa ngokubanzi kwimithombo yeendaba ezidumile ezifana neNew York Times, i-BBC News, kunye ne-LiveScience, kwaye ukukhokelela kwabakhokelela abantu abaninzi ukuba bakholelwe ukuba izityebi ngokuthe ngqo kwimizi zinokunyusa amathuba okuba namawele.
Nazi ezinye iinkcukacha malunga nokufunda. UDkt. Gary Steinman weZiko lezeMpilo laseLong Island (i-LIJ) eNew Hyde Park, i-NY yafunda amaqela amathathu amabhinqa:
- Vegans (abo bangadliyo imveliso yezilwanyana nhlobo)
- Vegetarians (abo bangadli inyama kodwa badla iimveliso zobisi)
- Omnivores (abo badla inyama, kubandakanywa nemveliso yobisi)
Iziphumo zophando lwakhe zibonise ukuba iqela labesifazane be-vegan babenamawele amaninzi kangako-eqinisweni, amahlanu amancinci - kunamanye amaqela.
Ingcamango yakhe yayikuthi i-Insulin-Like Growth Factor (IGF), iprotheyini eyanceda ama-embry kusinda ngexesha lokuqala lophuhliso, liphakanyisiwe xa iinkomo zinikezwa i-hormone yokukhula ukwenzela ukwandisa umveliso wabo wobisi kunye nenkomo. Xa abafazi besondeza ubisi kulezi zi lwanyana, ama-hormone abo asabela, avuselela i-ovulation.
Wadibanisa imfundiso yakhe ekunyuseni ngokukhawuleza ekuzalweni kwabaninzi kwiminyaka engamashumi amathathu edlulileyo. Ukwanda kwandisoloko kuthethwa ngokuba ngumntwana okhulileyo kunye nokusetyenziswa kweteknoloji yokuzala. Nangona kunjalo, olu phofu lucetyiswa ukuba imikhuba yokutya ingaba yinto ebalulekileyo.
Kwakhona kuya kuchaza ukuba kutheni ukunyuswa kubonakala kuphela kwi-fraternal, okanye i-twinning dizygotic , ephumela ekukhuliseni amaqanda amaninzi. Ngokungafaniyo, okanye i- monozygotic , amaxabiso okuguqa ahlale engatshintshi. Amawele e-Monozygotic ayenzeka xa iqanda elilodwa lityalwe libe linye. Njengoko kunjalo, akukho mntu uchonge ngokucacileyo imbangela ye-twinning ye-monozygotic.
Ubungqina obutsha malunga nokuHlenga nokuLa
Kwiminyaka ukususela kwisifundo sokuqala sikaSteinman sakhishwa, le mfundiso iye yabizwa. Ukuphononongwa okulandelayo kufumaneke iimpazamo ekufundweni, kubandakanywa isampula yokufunda. Ubungqina obuphikisanayo bubonisa ukuba amazinga e-IGF ekukhuselweni kweenkomo azincinci kwaye ukuba impembelelo yokugaya ngokusetyenziswa kwemveliso yobisi ayinakwenzeka kubantu. Ngoko, ukuxhamla phakathi kokutya okunotye ngobisi kunye nokunyuka kwamawele kuhlala kungathandabuzeki. Kungenzeka ukuba ukondla jikelele kwabangamahlwempu phakathi kwabafazi be-vegan abaye bathatha inxaxheba ekufundweni kwakunokwenzeka ukuba inkcazo yesiganeko esincinane sejubane.
Ngoxa iyingcamango enomdla ukubonisa ukunyuka kwamazinga amaninzi okuzalwa ekusebenziseni imveliso yobisi, ayamkelekanga njengokwenzululwazi.
Imithombo:
I-Bakalar, uN. "Ukunyuka kwiNqanaba leZibini zokuzalwa kungahle kutyunjwe kwiNkundla yeMveliso." I-New York Times , ngoMeyi 30, 2006. Kufumaneka ngoFebruwari 12, 2016. http://www.nytimes.com/2006/05/30/health/30twin.html
Collier RJ, Bauman DE. "Ukuhlaziywa kwiinkxalabo zezempilo zomntu ngokusetyenziswa kwesilwanyana somatotropin esele ibuyele kwiinkomo zobisi." Umbhalo weNzululwazi yezilwanyana. , UEpreli 2014, pg. 1800-7.
Steinman, G., "Iinkqubo zokuwahluza: VII. Impembelelo yokutya kunye nokufa kwinqanaba lomntu." Umbhalo weMithi yokuzala, ngoMeyi 2006, iphe. 405.