Katswiri wina wodziwa zakulera wodziwika chifukwa cha chidwi chake komanso kafukufuku wokhudza amayi ambiri omwe ali ndi pakati adapeza kuti kusintha kwa kadyedwe kumatha kusokoneza mwayi wa amayi wokhala ndi mapasa, komanso kuti mwayi wonse umatsimikiziridwa ndi kuphatikiza kwa zakudya komanso chibadwa.
Poyerekeza ndi mapasa a amayi omwe sadya nyama ndi akazi omwe amadya nyama, Dr. Gary Steinman, dokotala wa ogwira ntchito ku Long Island Jewish Medical Center ku New Hyde Park, New York, anapeza kuti mankhwala a amayi, makamaka mkaka. mankhwala, ndi kasanu mwayi kukhala ndi mapasa. Kafukufukuyu adasindikizidwa mu Meyi 20, 2006 ya Journal of Reproductive Medicine.
The Lancet inasindikiza ndemanga ya Dr. Steinman pa zotsatira za zakudya pa mapasa m'magazini yake ya May 6.
Wolakwa akhoza kukhala insulini-monga kukula factor (IGF), puloteni yomwe imatulutsidwa kuchokera ku chiwindi cha nyama - kuphatikizapo anthu - poyankha kukula kwa hormone, imayendayenda m'magazi, ndikudutsa mkaka. IGF imawonjezera kukhudzika kwa thumba losunga mazira ku follicle-stimulating hormone, kuonjezera ovulation. Kafukufuku wina akuwonetsa kuti IGF ikhoza kuthandizira miluza kupulumuka magawo oyambirira a chitukuko. Kuchuluka kwa IGF m'magazi a amayi a vegan ndi pafupifupi 13% kutsika kuposa amayi omwe amadya mkaka.
Kuchuluka kwa mapasa ku US kwakwera kwambiri kuyambira 1975, pafupifupi nthawi yomwe ukadaulo wothandizira ubereki (ART) unayambitsidwa. Kuchedwetsa dala mimba kwathandizanso kuti pakhale mimba zambiri, chifukwa mwayi wa amayi wokhala ndi mapasa ukuwonjezeka ndi msinkhu ngakhale popanda mankhwala a ART.
"Kupitirizabe kukwera kwa mapasa mu 1990, komabe, kungakhalenso zotsatira za kuyambitsidwa kwa hormone ya kukula kwa ng'ombe kuti ikhale yabwino," anatero Dr. Steinman.
Pakafukufuku waposachedwapa, Dr. Steinman anayerekezera mapasa a akazi amene amadya bwinobwino, odya zamasamba amene amadya mkaka, ndi nyama zodya nyama, anapeza kuti tizilombo toyambitsa matenda timabereka mapasa kuwirikiza kasanu kuposa amayi amene samapatula mkaka pazakudya zawo.
Kuphatikiza pa zotsatira za zakudya pamagulu a IGF, pali kugwirizana kwa majini mu mitundu yambiri ya nyama, kuphatikizapo anthu. Mu ng'ombe, mbali za ma genetic code omwe amabadwa amapasa ali pafupi ndi jini la IGF. Ofufuza adachita kafukufuku wamkulu wa azimayi aku Africa-America, oyera, ndi aku Asia ndipo adapeza kuti milingo ya IGF inali yayikulu kwambiri mwa amayi aku Africa-America komanso otsika kwambiri mwa amayi aku Asia. Azimayi ena ali ndi chibadwa chopangira IGF kuposa ena. Paziwerengero izi, ma graph amapasa amafanana ndi graph ya FMI. "Kafukufukuyu akuwonetsa kwa nthawi yoyamba kuti mwayi wokhala ndi mapasa umatsimikiziridwa ndi chibadwa ndi chilengedwe, kapena, mwa kuyankhula kwina, chilengedwe ndi zakudya," akutero Dr. Steinman. Zotsatirazi ndi zofanana ndi zomwe akatswiri ena ofufuza a ng'ombe amawona, zomwe ndi izi: mwayi wobala mapasa umagwirizana mwachindunji ndi kukula kwa insulini m'magazi a mkazi.
“Popeza kuti amayi ambiri amene ali ndi pakati amakhala ndi mavuto ambiri monga kubadwa asanakwane, kupunduka, ndi matenda oopsa a amayi kuposa amene ali ndi mimba ya singleton, zotsatira za kafukufukuyu zikusonyeza kuti amayi amene akuganiza zokhala ndi pakati ayenera kuganizira zochotsa nyama ndi mkaka n’kuika zakudya zina zomanga thupi, makamaka m’mayiko. kumene timadzi tomwe timakula timaloledwa kuperekedwa kwa nyama,” akutero Dr. Steinman.
Dr. Steinman wakhala akuphunzira za kubadwa kwa mapasa kuyambira pamene adatenga mapasa anayi ofanana mu 1997 ku Long Island EMC. Kafukufuku wake waposachedwa, wofalitsidwa mwezi uno mu Journal of Reproductive Medicine, pa amapasa achibale, ndi wachisanu ndi chiwiri pamndandanda. Zotsala zisanu ndi chimodzi, zofalitsidwa m'magazini yomweyo, zimayang'ana kwambiri mapasa ofanana kapena ofanana. Chidule cha zotsatira zina zaperekedwa pansipa.
Kafukufuku Wam'mbuyo
Dr. Steinman anapeza kuti amayi amene amatenga mimba pamene akuyamwitsa amakhala ndi mwayi wochuluka kuŵirikiza kasanu ndi kasanu kuti abereke mapasa kusiyana ndi amene samayamwitsa panthaŵi yoyembekezera. Anatsimikiziranso kafukufuku wa asayansi ena osonyeza kuti mapasa ofanana ndi ofala kwambiri pakati pa atsikana kusiyana ndi anyamata, makamaka pakati pa ana olumikizana, komanso kuti mapasa ofanana amatha kutaya padera kusiyana ndi mapasa apachibale.
Dr. Steinman, pogwiritsa ntchito zidindo za zala, anapeza umboni wakuti pamene chiwerengero cha ana obadwa ofanana chikuwonjezeka, kusiyana kwawo kwa thupi kumawonjezekanso. Pakafukufuku waposachedwapa wokhudza njira za kubadwa kwa mapasa, Dr. Steinman adatsimikiza kuti kugwiritsa ntchito in vitro fertilization (IVF) kumawonjezera mwayi wokhala ndi mapasa ofanana: kuyika miluza iwiri kumabala ana atatu, adanenanso kuti kuwonjezeka kwa calcium. kapena kuchepa kwa kuchuluka kwa chelating agent - ethylenediaminetetraacetic acid (EDTA) mu chilengedwe cha IVF kungachepetse chiopsezo cha zovuta zosafunikira.