Isoya ingenye yezithako ezibalulekile ekudleni kwemifino. Ubhontshisi wesoya uqukethe izinhlanganisela ezaziwa ngokuthi ama-isoflavones, ifomula yawo yamakhemikhali efana nama-estrogens abantu. Lokhu kufana kuphakamisa ukukhathazeka ngokuthi imikhiqizo yesoya ingase ibe nemiphumela yamahomoni, njengabesilisa besifazane noma ukwanda kwengozi yomdlavuza kwabesifazane.
Imiphumela yocwaningo ayibonisi imiphumela emibi yokusetshenziswa kwe-soy emadodeni - amazinga e-testosterone nomsebenzi wokuzala uyagcinwa. Kepha, iziguli ezinomdlavuza kanye nabantu abanempilo bahlolwe eNyuvesi yaseSouthern California. Abesifazane abadla ukudla kwansuku zonke kwemikhiqizo yesoya babemancane ngo-30% amathuba okuba nomdlavuza webele kunalabo abadle isoya encane kakhulu. (Ukudla cishe inkomishi eyodwa yobisi lwesoya noma ½ inkomishi ye-tofu.) Ngakho, isilinganiso esisesilinganisweni sesoya esidliwe singanciphisa ingozi yomdlavuza webele.
Inani elanele lemikhiqizo yesoya libuye lelule impilo yalabo besifazane asebenomdlavuza webele futhi abelashiwe. Ezigulini ezingama-5042 ezihloliwe, labo abadla ukudla okubili kwesoya nsuku zonke babenethuba eliphansi lama-30% lokuphinda baphinde bafe kunabanye.
Akuzange kufakazelwe ukuthi i-soy iphikisana nabantu abahluphekayo. Kodwa ku-hypothyroidism, indlala yegilo ayikhiphi amahomoni anele, futhi imikhiqizo yesoya inganciphisa ukumuncwa kwezithasiselo. Kulokhu, udokotela angakwazi, uma kunesidingo, ukulungisa umthamo wemithi ethathwe.
Kumele kukhunjulwe ukuthi i-soy ingaba ngesimo se-hives, ukulunywa, ikhala eligijima noma ukuphefumula. Kwabanye abantu, lokhu kusabela kubonakala kuphela ngokudla okuningi kwe-soy. Ukungezwani nesoya kwezingane kuvame ukuhamba nokukhula. Kodwa umuntu omdala angase abe nezimpawu ezazingekho ngaphambili. Ukungezwani nesoya kungahlolwa emtholampilo ngokuhlolwa kwesikhumba nokuhlolwa kwegazi.
Ukukhethwa kwemikhiqizo yesoya kufanele kwenziwe ngokuvuna. Ukukhiqizwa kwama-substitutes enyama kuvame ukusekelwe ekukhishweni kwe-soy protein concentrate, futhi umkhiqizo onjalo ususa emvelweni, owenziwe ngokwemvelo, ubhontshisi.