Shin ruwan zafi ya fi ruwan sanyi don wanke hannu?

Wannan sanannen hikimar kamar yana cewa ruwan zafi ya fi kyau ...

Mafi yawan darajar wanke hannu shine aikin gogewa da kurkurewar da ke fitar da kwayoyin cuta daga saman fata. Wani bincike da aka gudanar a jami’ar Rutgers da ke kasar Amurka ya nuna cewa ruwan zafi bai fi sanyi ba, hasali ma, ruwan zafi da rashin jin dadi yana kara yawan kwayoyin cuta, domin yana lalata garkuwar jikin fata.