Vitamini A CAS: 68-26-8

Vitamini A imagwira ntchito yogawa maselo, yomwe ndi yofunika kwambiri pakukula bwino ndi kusamalira minofu monga khungu, dongosolo lopumira, ndi njira yotulutsira m'mimba. Imagwiranso ntchito pakupanga ndi kulamulira majini. Magwero a vitamini A ndi chiwindi, mafuta a chiwindi cha nsomba, mkaka, ndi zakudya zolimbitsa thupi, komanso zipatso ndi ndiwo zamasamba zokongola. Ntchito yayikulu ya Vitamini A ndikuthandiza kuwona, makamaka m'malo opanda kuwala. Imathandiza kusunga thanzi la cornea ndi minofu ina ya maso, ndipo kusowa kwake kungayambitse khungu la usiku ndipo pamapeto pake kungayambitse khungu lonse. Kuphatikiza apo, vitamini A ndi yofunika kwambiri pakugwira ntchito bwino kwa chitetezo chamthupi, chifukwa imathandizira kulimba kwa khungu ndi nembanemba ya mucous, zomwe zimakhala zotchinga matenda. Kuphatikiza apo, vitamini A ndi yofunika kwambiri pakukula bwino ndi chitukuko, chifukwa imagwira ntchito yofunika kwambiri pakukula bwino kwa maselo ndi kusunga minofu yathanzi, kuphatikiza khungu, dongosolo lopumira, ndi njira yotulutsira m'mimba. Udindo wake pakukula bwino kwa majini ndi kulamulira umathandizanso pa thanzi lonse. Kwa amayi apakati, vitamini A ndi yofunika kwambiri pakukula kwa mwana wosabadwayo. Ponseponse, vitamini A ndi yofunika kwambiri pakuwona, kugwira ntchito kwa chitetezo chamthupi, komanso thanzi la maselo, zomwe zimapangitsa kuti ikhale michere yofunika kwambiri pa thanzi lonse. Komabe, ndikofunikira kudya mokwanira, chifukwa kudya kwambiri vitamini A kungayambitse poizoni komanso zotsatirapo zoyipa pa thanzi.