Mu mwaka wa 2024, Knight et al. bakoze ubushakashatsi bw’umwaka umwe bugereranya imbwa zirya inyama zisanzwe, inyama zitarimo gutogota, n’imirire yuzuye ya vegan. Abashakashatsi batangaje ko imbwa mu itsinda rya vegan zagize ibyavuye mu buzima bwiza kurusha izindi, aho igipimo cy’indwara cyari 36%, ugereranyije na 43% mu itsinda ry’inyama zitarimo gutogota no 49% mu itsinda ry’inyama zisanzwe. Ubushakashatsi kandi bwerekanye ko ibimenyetso bimwe by’indwara byari 14–51% bike mu mbwa zirya imirire ya vegan, mu gihe amahirwe y’indwara esheshatu zihariye yari 50–61% munsi y’imbwa zirya inyama zisanzwe. Inkomoko

Mu 2024, Dwaraka n’abandi batangaje ko indyo ya vegan yafatanyije n’ibipimo bito by’indwara zifitanye isano n’imyaka ndetse n’ihindagurika ry’imyaka rihuta buhoro, bigaragaza ko imiterere y’indyo ishingiye ku bimera igihe kirekire ishobora gushyigikira kwiyongera k’ubuzima bwiza no kuramba kurushaho. Inkomoko

Muri 2017, ubushakashatsi bwasohotse muri Environmental Research Letters bwagaragaje ko kwihindurira indyo ishingiye ku bimera ari imwe mu ngamba zifatika ku giti cy’umuntu mu kugabanya ingaruka ku bidukikije. Abashakashatsi basanze guhindura indyo ishingiye ku bimera bifite inyungu eshatu ku rugero rw’ingaruka z’isuku y’imyenda mu mazi akonje, inshuro enye ku nyungu yo kwiyuhagira imyenda mu kirere cyangwa kuyisubiramo, n’inshuro umunani ku ngaruka yo guhindura amatara asanzwe akoresha ingufu nyinshi akajya ku matara yaka neza kandi akoresha ingufu nkeya. Inkomoko

Mu 2023, ubushakashatsi bwa Sodexo bwagaragaje ko 81% by’abanyeshuri bahisemo ifunguro rya vegan iyo ryari rihari nk’amahitamo asanzwe ku menyo y’ishuri. Ibisubizo byerekana ko guhindura bike mu buryo bwo gutanga amahitamo y'ibiryo bishobora kongera cyane gukoresha amafunguro ashingiye ku bimera batagabanyije uburenganzira bw’abaguzi. Source

Mu 2023, Scarborough n’abandi basanze indyo ya vegan ifite ingaruka ku bidukikije nkeya cyane ugereranije n’indyo ikungahaye ku nyama mu bipimo byose byasuzumwe. Ubushakashatsi bwerekanye ko ibyuka byangiza ikirere bituruka ku ndyo ya vegan bingana hafi na 25% by'ibyuka biva ku ndyo ikungahaye ku nyama, mu gihe ingaruka ku ikoreshwa ry'amazi, eutrophication, n'igabanuka ry'ubwoko bw'ibinyabuzima byari hafi ya 46%, 27%, na 34% uko bikurikiranye. Ibi bisubizo byerekana ko kwinjiza indyo ya vegan bishobora kugabanya cyane imihangayiko y'ibidukikije iterwa n'ubuhinzi n'ikoreshwa ry'ibiribwa. Inkomoko

Ritchie na Roser (2024) bavuze ko ubuhinzi bukoresha hafi 44% by'ubutaka bw'isi bushobora guturwaho, aho hafi 80% y'ubu butaka bw'ubuhinzi bwagenewe ubworozi, yaba binyuze mu kurya inyamaswa ku butaka cyangwa mu guhinga ibihingwa bikoreshwa nk'ibiryo by'inyamaswa. Ibi byerekana ingaruka nini z'ubutaka zifitanye isano n'uburyo bwo gutunganya ibiribwa bushingiye ku nyamaswa ugereranije n'uburyo bushingiye ku bimera. Inkomoko

Muri 2021, Xu n’abandi basanze ubuhinzi bw’inyamaswa, harimo n’itunganywa ry’amatungo n’ubuhinzi bw’ibihingwa bikoreshwa nk’ifunguro ry’inyamaswa, bwateje hafi 57% by’imyuka ihumanya ikirere iva mu musaruro w’ibiribwa ku isi. Mu gihe ibiribwa bishingiye ku bimera bifata hafi 29% by’iyo myuka, bivuze ko imyuka ikomoka ku buryo bw’ibiribwa bishingiye ku nyamaswa iri hafi kabiri kurusha iy’ibimera. Source

Mu 2019, ubushakashatsi bwasohotse muri Harvard University bwasuzumye inyungu z'ikirere zo gusubiza ubutaka bw'Ubwongereza bwari bukoreshwa n'amatungo. Buvuga ko kongera gutera ibiti mu mirima byakuraho toni miliyoni 3,236 za CO₂ mu kirere, bingana no kugabanya ibyuka byangiza ikirere by'umwaka icyenda by'ubukungu bw'Ubwongereza. Source

Mu 2019, Greenpeace yatangaje ko mu Muryango w’Ubumwe bw’Uburayi, hejuru ya 60% by'ubutaka bw'ibirima byagenewe gutunganya ifunguro ry'amatungo aho kuba ibihingwa bigenewe abantu. Ikigo cyagaragaje ko guhinga ifunguro ry'amatungo ku rugero runini, cyane cyane ibinyampeke n'ibigori, bigira uruhare mu ngaruka z'ibidukikije by'ubworozi, harimo igitutu ku ikoreshwa ry'ubutaka, gutakaza amashyamba, no kugabanuka kw'ubwiyunge bw'ibinyabuzima. Inkomoko

Muri Ukwakira 2024, Alves n’abandi basanze mu bihugu icumi by’Uburayi, inyama n’ibikomoka ku nyama byari bifite uruhare runini cyane mu ngaruka z’ibidukikije bijyanye no gukoresha ibiribwa, bitanga 40% by’ihumana ry’imyuka ihumanya ikirere (GHGE) na 53.1% by’imikoreshereze y’ubutaka (LU). Ibikomoka ku mata byatanze 18.2% by’ihumana ry’imyuka ihumanya ikirere na 13.7% by’imikoreshereze y’ubutaka. Nubwo izi ngaruka ari nini, inyama n’ibikomoka ku mata byari gusa 6.3% by’ibicuruzwa byose byaribwa, harimo n’ibinyobwa, bigaragaza ingaruka ikomeye z’ibiribwa bishingiye ku nyamaswa ugereranyije n’umubare w’ibiribwa byakoreshejwe. Source

Mu 2024, Our World in Data yatangaje ko ubuhinzi bw’amatungo, harimo ubutaka bukoreshwa mu kurira no mu gutera ibiryo by’amatungo, bugize hafi 80% by’ubuso bw’ubuhinzi ku isi. Inkomoko

Mu 2023, Statista yagaragaje ko amata y’inka afite ingaruka zikomeye ku bidukikije kurusha ibisimbura bishingiye ku bimera. Urugero, litiro imwe y’amata y’inka itanga hafi kilogramu 3.2 za CO₂ kandi ikeneye litiro 628 z’amazi, ugereranije n’amata ya soya, atanga hafi kilogramu 1 ya CO₂ kandi akoresha litiro 28 z’amazi kuri litiro. Inkomoko