Bisa ga bincikensa, mazan da suka yi nasara a gwaje-gwajen hankali da yawa suna da adadi mai yawa na lafiyayyen maniyyi a cikin maniyyinsu. Sabanin haka, tare da ƙananan sakamakon gwajin hankali, an sami ƙarancin spermatozoa kuma sun kasance ƙasa da wayar hannu.
Wadannan nau'o'in nau'i biyu, lafiyar maniyyi da hankali, suna da alaƙa ta hanyar hadadden tsarin hulɗar halittu da muhalli da aka tsara don taimakawa mata su zabi abokin aure, in ji Jeffrey Miller.
IQ alama ce mai kyau ga lafiyar mutum gaba ɗaya, in ji Miller. “A cikin kwakwalwarmu, rabin kwayoyin halittar da muke da su ne kawai ake kunna su. Wannan yana nufin cewa ta hanyar hankalin maza, mata za su iya kusan, amma yana da sauƙin yin hukunci game da maye gurbi da aka watsa a matakin kwayoyin halitta, ”in ji shi. Gaskiya ne, masanin kimiyyar ya lura cewa daga wannan binciken ba shi yiwuwa a kammala cewa ingancin maniyyi da matakin hankali an ƙaddara ta hanyar kwayoyin halitta guda ɗaya.
An bayyana alakar da ke tsakanin maniyyi da hankali ne a wani binciken bayanan da aka tattara a shekarar 1985 don nazarin illolin da ke tattare da fallasa ga Agent Orange, wani makamin sinadari da ake amfani da shi a Vietnam.
A cikin 1985, 4402 Tsojojin Yaƙin Vietnam da abin ya shafa ta hanyar hulɗa da Agent Orange an fuskanci gwaje-gwaje daban-daban na likita da tunani na kwanaki uku. Musamman ma, tsoffin sojoji 425 sun ba da samfurin maniyyin su.
Ta hanyar sarrafa bayanan da aka samu, ƙungiyar Miller ta bayyana alaƙar ƙididdiga tsakanin matakin harshe da ƙwarewar lissafi na batutuwa da ingancin maniyyin su. An samu wannan sakamakon bayan yin la'akari da duk ƙarin abubuwa - shekaru, kwayoyi da magungunan da tsofaffi ke sha, da dai sauransu.
An yi niyyar Agent Orange ne don lalata dazuzzukan da Viet Cong ke buya. Abubuwan da ke cikin kayan aiki sun haɗa da adadi mai yawa na dioxins wanda ke haifar da wasu cututtuka masu tsanani a cikin mutane, ciki har da ciwon daji.
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