July 23rd, 2012 mu Neuroscience
Kusakaniza chakudya ndi BMI kumagwirizanitsidwa ku ntchito zonse za ubongo ndi kudziletsa, kufufuza kwatsopano kwapeza.
Kafukufuku wochitidwa ndi ophunzira ochokera ku Yunivesite ya Exeter, Cardiff, Bristol, ndi Bangor, adapeza kuti kuyankha kwaubongo 'kwamalipiro' pazithunzi za chakudya kunaneneratu kuchuluka kwa zomwe adzadye pambuyo pake. Izi zidakhudza kwambiri kuchuluka kwa zomwe amadya kuposa momwe amadziwira njala kapena momwe amafunira chakudya,
Kuyankha kwa ubongo kwakukulu kunayanjananso ndi kuwonjezeka kwa thupi (BMI), koma mwa anthu okhawo omwe amalephera kudziletsa pa funso la mafunso. Kwa iwo omwe amadziwika kuti ali odziletsa kwambiri, ubongo wawo umakhudza kwambiri chakudya chawo makamaka unali wogwirizana ndi m'munsi mwa BMI.
Phunziroli, lomwe tsopano likufalitsidwa mu nyuzipepala ya NeuroImage, limapereka umboni wowonjezera wakuti kudya kwambiri ndi kuwonjezeka kulemera kumayanjanitsidwa, mbali ina, ku dera la ubongo lomwe limagwirizana ndi zolimbikitsa ndi mphotho, yotchedwa nucleus accumbens. Mayankho m'dera lino la ubongo awonetsedwa kuti akulosera kulemera kwa ulemelero wathanzi ndi anthu olemera kwambiri, koma tsopano akatswiri a maphunziro adapeza kuti izi sizikudziwika ndi njala, ndipo kudziletsa komweku kumathandizanso.
Kutsatira izi, ophunzira ku Yunivesite ya Exeter ndi Cardiff ayamba kuyesa njira 'zophunzitsira ubongo' zomwe zapangidwa kuti muchepetse mphamvu ya chakudya kwa anthu omwe amafotokoza kuti sangathe kudziletsa. Mayeso ofananawo akugwiritsidwa ntchito kuthandiza omwe ali ndi vuto la kutchova juga kapena mowa
Dr Natalia Lawrence wa Psychology ku University of Exeter, wofufuza wamkulu pazofufuza zoyambirira komanso maphunziro atsopanowa, adati: "Kafukufuku wathu akuwonetsa chifukwa chomwe anthu ena amadya kwambiri ndikulemera kuposa ena akamakumana ndi zithunzi zanthawi yayitali zokhwasula-khwasula ndipo amachitira. Zithunzi zazakudya, monga zomwe zimagwiritsidwa ntchito kutsatsa, zimapangitsa kuwonjezeka kwazomwe zikuchitika muubongo 'm'malo opindulitsa' mwa anthu ena koma osati mwa ena. Ngati anthu ovutawa nawonso amavutika kudziletsa, komwe mwina mwachibadwa, amakhala onenepa kwambiri. Tsopano tikupanga mapulogalamu apakompyuta omwe tikukhulupirira kuti athetsa mavuto azakudya izi pophunzitsa ubongo kuti usachite bwino izi. ”
Achinyamata makumi awiri ndi asanu, omwe ali ndi thanzi labwino la BMI ochokera ku 17-30 anali nawo mu phunziroli. Ophunzira achikazi adasankhidwa chifukwa kafukufuku amasonyeza kuti amayi amaonetsa mayankho amphamvu kwambiri pazokhudzana ndi zakudya. Kusintha kwa mahomoni pa nthawi ya kusamba kumakhudza momwe amachitira, kotero onse omwe amatenga nawo mbali amatenga mapiritsi okhudzana ndi kulera. Ophunzirawo sanadye kwa maola asanu ndi limodzi kuti atsimikize kuti ali ndi njala panthawi yopikera ndipo anapatsidwa mbale yopezeka ndi 150 g (pakiti zinayi ndi theka) za crisps kudya pamapeto pa phunziro; iwo adadziwitsidwa kuti kudya kosavuta kunayesedwa pambuyo pake.
Ochita kafukufuku adagwiritsa ntchito sikani ya MRI kuti adziwe zomwe ophunzirawo akuchita muubongo pomwe adawonetsedwa zithunzi za zinthu zapakhomo, ndi zakudya zomwe zimasiyanasiyana pakukhumba ndi zopatsa mphamvu. Pambuyo pofufuza, ophunzira adavotera zithunzithunzi za chakudya kukhala chosakhumbika ndikuwonetsa kuchuluka kwawo kwa njala ndi kulakalaka chakudya.
Zotsatira zidawonetsa kuti mayankho aubongo a omwe akutenga nawo mbali pachakudya (chokhudzana ndi zinthu) mu maukosi omwe amapezeka adaneneratu kuti ndi angati omwe adadya pambuyo poti asanthule. Komabe, kuchuluka kwa omwe akutenga nawo mbali ndi njala komanso momwe amakonda komanso kufunira zakudya, kuphatikiza ma crisps, sizinagwirizane ndi zomwe amadya.
Zambiri: Bukuli linalipidwa ndi Wales Institute of Cognitive Neuroscience.
Chimene phunziro ili likuwonetsa:
- Mayankho aubongo pazithunzi za zakudya amasiyanasiyana kwambiri pakati pa anthu.
- Kuyankha kwamaubongo pazithunzi za chakudya koma osazindikira njala kapena kufunitsitsa kudya kuneneratu zakumwa zomwe zingatsatire pambuyo pake.
- Mitundu ya anthu yodziletsa imakhudza kaya kuyankha kwaubongo kumeneku kumalumikizidwa ndi BMI yokwera kapena yotsika.
Zimene phunziroli silikuwonetsa:
- Kuyankha kwamaubongo pazomwe zimayambitsa kudya kumayambitsa kudya kwambiri.
- Mabungwe omwe adanenedwa pano ndi owona kwa aliyense - ndi atsikana athanzi okha omwe adaphatikizidwa.
- Kaya mayankho athu muubongo ndi magawo athu odziletsa amaphunziridwa kapena mwachibadwa.
Aperekedwa ndi University of Exeter
"Zokhwasula-khwasula ndi BMI yolumikizidwa ndi zotsatira ziwiri zomwe ubongo umachita komanso kudziletsa." Julayi 23rd, 2012. http://medicalxpress.com/news/2012-07-snacking-bmi-linked-effect-brain.html