Chiwerengero chowonjezeka cha anthu m'mayiko oyambirira akuyamba kusintha, ndiko kuti, anthu omwe amadyabe nyama (ndipo omwe sali odya zamasamba), koma akuyesera kuchepetsa kudya kwawo ndikuyang'ana mwachangu zakudya zatsopano zamasamba.
Chifukwa cha mchitidwe umenewu, chiwerengero cha malo odyera zamasamba ndi zamasamba chikukulirakulirabe. Odya zamasamba akupeza ntchito zabwinoko kuposa kale. Ndi kukwera kwa okonda kusintha, malo odyera akukulitsa zopereka zawo zamasamba.
"M'mbiri yakale, ophika sakhala okonda zamasamba, koma izi zikusintha," adatero Oliver Peyton, yemwe amakhala ku London. “Ophika achichepere amadziŵa makamaka kufunika kwa zakudya zamasamba. Anthu ambiri akusankha zakudya zamasamba masiku ano ndipo ndi ntchito yanga kuwagawira.” Zomwe zikuwonjezera izi ndizovuta zaumoyo, komanso kuwonongeka kwa chilengedwe komwe makampani anyama ndi mkaka akuchita, ndipo anthu otchuka amalankhula zambiri za izi.
Peyton ndi ophika ena angapo alowa nawo kampeni ya Sir Paul McCartney ya “Meat Free Lolemba” kulimbikitsa anthu ambiri kuti achepetse kudya nyama pofuna kuchepetsa kutentha kwa dziko. Lipoti laposachedwapa la UN linanena kuti malonda a ziweto amathandizira kwambiri kutentha kwa dziko kuposa njira zonse zoyendera pamodzi.
Wophika wina waku London, Andrew Darju, adati ambiri mwa makasitomala ake odyera zamasamba Vanilla Black ndi odya nyama kufunafuna zakudya zatsopano. Ndipo si malo odyera okha omwe akutsata kuchuluka kwazakudya zamasamba. Msika wolowa m'malo mwa nyama unagulitsa £739 miliyoni ($1,3 biliyoni) mu 2008, kukweza 2003 peresenti kuchokera pa 20.
Malinga ndi kafukufuku wamsika kuchokera ku gulu la Mintel, izi zipitilira. Monga odyetsera zamasamba ambiri, ena mwa a Flexitarian amalimbikitsidwanso ndi kuzunzika kwa nyama zomwe zimagwiritsidwa ntchito ngati chakudya, ndipo anthu otchuka amathandizanso kupewa nyama pazifukwa izi. Mwachitsanzo, mdzukulu wa Che Guevara wosintha zinthu posachedwapa adalowa nawo kampeni yofalitsa zamasamba, People for the Ethical Treatment of Animals.