Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Gabatarwa: Bincike ya nuna cewa akwai dangantaka tsakanin ƙanƙantar jiki da tsawon rai. Mutane masu ƙanƙanta kuma suna da saurin samun cutar hawan jini kuma ba sa yawan kamuwa da cutar kansa. Jami'ar Hawaii ta gano cewa <unk> longevity gene <unk> FOXO3 wanda ke rage tasirin tsufa ya fi yawa a cikin mutane masu ƙarancin jiki. Ƙananan tsawo yana rage haɗarin rashin ƙarfi na venous. Lokacin da jama'a ke raba asalin kwayoyin halitta da abubuwan muhalli, matsakaicin tsawo yana da halaye a cikin rukuni. Bambanci na musamman na tsawo (kimanin kashi 20% na karkacewa daga matsakaici) a cikin irin wannan yawan jama'a wani lokacin yana faruwa ne saboda gigantism ko dwarfism, waɗanda sune yanayin kiwon lafiya da ke haifar da takamaiman kwayoyin halitta ko rashin lafiyar endocrine. Ci gaban tsawo na ɗan adam na iya zama alama ce ta mahimman abubuwan jin daɗin rayuwa guda biyu, wato ingancin abinci mai gina jiki da lafiya. A yankuna na talauci ko yaƙi, abubuwan muhalli kamar rashin abinci mai gina jiki na yau da kullun a lokacin ƙuruciya ko samartaka na iya haifar da jinkirin haɓaka da / ko raguwar raguwa a cikin girma na manya ko da ba tare da kasancewar ɗayan waɗannan yanayin kiwon lafiya ba. Wasu bincike sun nuna cewa tsayi mafi girma yana da alaƙa da nasara mafi girma a cikin saduwa da samun kuɗi a cikin maza, kodayake wasu bincike sun nuna cewa wannan bai shafi maza ba fararen fata ba. Tsawo alama ce ta jima'i a cikin mutane. Wani bincike da aka yi game da yawan haifuwa a Britaniya a ƙarni na 20 ya nuna cewa ko da yake maza masu tsayi suna haifan yara fiye da maza masu gajeren jiki, mata masu ƙanƙantar jiki suna haifan yara fiye da mata masu tsayi.  Tambaya: Me ke sa mutum ya yi tsayi dabam dabam?
gigantism ko dwarfism