Chikwata chenyika chesango chesainzi chakaitwa chidzidzo panguva yaaidzidza kuvimba kwehupenyu hwehupenyu hwevanhu kubva kune simba rekuchinja kwemuviri wemuviri wavo. Zvakaitika kuti kugona kwemunhu kukora zvishoma nezvishoma mumakore anobatsira kuwedzera muhupenyu hwehupenyu hwehupenyu hwehupenyu.
Mukudzidza, masayendisiti anomiririra yunivhesiti yeOhio Michigan University vakuru uye vanopfuura vana 3,700 vakapinda.
Nguva yakajairika yenguva pfupi yeruzivo rwekurapa yakapfuura hafu yezana uye yakafukidzwa 1948-2014. Panguva imwecheteyo, kuongorora kunofungidzirwa zvizvarwa zviviri panguva imwechete vamiriri vekwavo vaive makumi matatu nemasere kusvika makumi masere emakore. Nyaya huru yekufungidzira panguva imwe chete yaive iyo misa misa index inobvumira kukosha kwekusiyanisa kuvapo kwemamiriro ezvinhu akajairwa kubva pakufutisa kuve chirwere chakakomba. Chinangwa chekudzidza chaive chekuziva kuwirirana kwehupenyu hwehupenyu hwevanhu vane simba rekushanduka kwehuremu munguva. Nekuda kweizvozvo, mhedzisiro yekuongorora yakaratidza kuti vanhu vakarega vakabereka vanhu vakuru vane huwandu hwemuviri, asi vamwe zvakanyanya vakawanikwa vachembera, asi zvaive zvisina kujaira nhanho yekufutisa.
Zvinokosha kuti "wechipiri" pasi pehupenyu hwehupenyu hwakasurukirwa kuve mupepereti yakajairika muhupenyu hwese hwehupenyu munzira yehupenyu, uye ivo, vaive "vhiza" vaine kutsauka kudiki kubva ku "Zvakajairika" BMI: Kuve neyakajairika kuremerwa kana kutarisana nemiviri yakajairwa mumuviri wepazasi kweakajaira - izvo, zvakatetepa asi pasina hutongi. Vamiriri vashoma vashoma vedunhu rambotaurwa revagari vemo vaigara vanhu vanotanga kuvhunduka nekuvapo kwehuremu hwakawandisa asi hwakarasikirwa nezera. Pakupedzisira, avo vakawana zviratidzo zvekufutisa zvave kusangana nematambudziko makuru nehupenyu husingagumi hwehupenyu kwemakore 31 mune ramangwana rakangowedzera. Izvo zvinozivikanwa kuti, kana uchiongorora, nyanzvi dzakafunga kuti huwandu hukuru hwezvinhu zvakasiyana zvezviitiko zvinokwanisa kukanganisa hupenyu hwehupenyu hwenzvimbo dzemagariro, nezvimwe.
Kupfupisa masayendisiti ekutsvagisa kwakazivisa kuti ivo vasingakwanise kutsiva maitiro emasimba akadaro. Nekudaro, mhedzisiro yebasa resainzi isingazivikanwe inosimbisa iyo yekutanga kuongororwa kweboka rimwechete rekutsvagisa. Kunyanya, muna 2013, nyanzvi dzakaratidzwa kuti kuvapo kwehuremu hwemuzana-chizvarwa kunogona kumudzivirira kwemakore maviri ehupenyu, chero pasina kushayikwa kwekunetseka kwekufutisa. Mhedzisiro yekudzidza yakaburitswa mugwaro rekunze raManariti yeEpidemiology.