Ofufuza a National Institutes of Health akusonyeza kuti ana obadwa ndi chithandizo cha kusabereka akhoza kukhala ndi chiopsezo chachikulu cha mphumu ndi ziwengo. Kafukufukuyu adachitidwa ndi asayansi ku Eunice Kennedy Shriver National Institute of Child Health and Human Development ndi National Institute of Environmental Health Sciences, gawo la National Institutes of Health. Zikuwonekera mu Kubereka Kwaumunthu.
Kafukufukuyu adalembetsa amayi pafupifupi 5,000 ndi ana 6,000 obadwa pakati pa 2008 ndi 2010. Amayi amayankha nthawi ndi nthawi ku mafunso okhudza thanzi lawo ndi thanzi la ana awo ndi mbiri yachipatala. Chithandizo cha kusabereka chomwe chimaphatikizidwa ndi umuna wa m'mimba (ubwamuna ndi dzira amaziphatikiza m'mbale ya labotale n'kuziika m'chiberekero), mankhwala olimbikitsa kutuluka kwa dzira, ndi njira yolowetsamo ubwamuna m'chibaliro.
Poyerekeza ndi ana obadwa popanda chithandizo cha infertility, ana obadwa pambuyo pa chithandizo amatha kukhala ndi kupuma kosalekeza pofika zaka 3, zomwe zingakhale chizindikiro cha mphumu. Ali ndi zaka 7 mpaka 9, ana oyembekezera kulandira chithandizo anali ndi 30% mwayi wokhala ndi mphumu, 77% amatha kukhala ndi chikanga (matenda omwe amayamba chifukwa cha zidzolo ndi kuyabwa) mankhwala.
Olembawo adapempha kafukufuku wowonjezera kuti adziwe momwe chithandizo cha kusabereka kapena kuchepetsa kubereka kwa makolo kungakhudzire kukula kwa mphumu ndi ziwengo kwa ana.