Likitoci sun dade da gano cewa koren shayi - daya daga cikin abubuwan sha da masu cin ganyayyaki suka fi so - yana da kaddarorin antioxidant, yana da kyau ga zuciya da fata. Amma kwanan nan, an ɗauki wani mataki mai mahimmanci a cikin nazarin abubuwan da ke da amfani na koren shayi. Masana kimiyya daga Jami'ar Basel (Switzerland) sun gano cewa cirewar shayi na shayi yana inganta ayyukan tunani na kwakwalwa, musamman ma, yana kara yawan filastik synaptic na gajeren lokaci - wanda ke rinjayar ikon magance matsalolin tunani kuma yana taimakawa wajen haddace mafi kyau.
A yayin binciken, an ba wa masu aikin sa kai maza 12 lafiyayyen ruwan sha mai ɗauke da gram 27.5 na kore shayi (ɓangare na batutuwa sun karɓi placebo don sarrafa haƙiƙanin gwajin). A lokacin da kuma bayan shan abin sha, an yi amfani da batutuwan gwajin MRI (na'urar kwamfuta na kwakwalwa). Sannan aka nemi su warware matsalolin tunani iri-iri. Masana kimiyya sun lura da ƙarfin ƙarfin waɗanda suka karɓi abin sha tare da tsantsar shayi don magance ayyuka da tunawa da bayanai.
Duk da cewa an gudanar da bincike da yawa kan koren shayi a kasashe daban-daban a baya, likitocin Switzerland ne kawai suka sami damar tabbatar da tasirin koren shayi akan ayyukan fahimi. Har ma sun nuna tsarin da ke haifar da sassan koren shayi: suna inganta haɗin gwiwar sassan sa daban-daban - wannan yana ƙara ikon sarrafawa da tunawa da bayanai.
A baya can, masana kimiyya sun riga sun tabbatar da amfanin koren shayi don ƙwaƙwalwar ajiya da kuma yaki da ciwon daji.
Ba za mu iya taimakawa ba sai dai muna farin ciki cewa irin wannan mashahurin abin sha mai cin ganyayyaki kamar koren shayi ya zama ma fi amfani fiye da yadda ake tunani a baya! Lalle ne, tare da madara mai soya da Kale (wanda ya dade ya tabbatar da amfaninsu), koren shayi a cikin fahimtar taro shine nau'in "wakili", jakada, alamar cin ganyayyaki gaba ɗaya.