Vitamine - chikamu chinokosha chekushanda kwezvikamu nemitemo yemuviri. Mumwe wavo - vitamin A inogadzikana-mafuta, iyo yemuviri wevana nevakuru inokosha. Kunyatsotaura, uyu haisi mavitamini, asi boka rave richinzi carotenoids, kubvira panguva yekutanga chizivo chacho chakabviswa kubva karoti. Aya mavithamini achiri muchibereko anopa fetus kuumbwa kwamazino, mapfupa, mafuta anoisa uye epithelium. Kuvonga vitamini A, masero matsva anokura, uye kukwegura kunoderera. Mukuwedzera, carotenoids inopa basa rezvikamu zvemaonero, kubudiswa kwehomoni, kuchengetedza huwandu hwekushandiswa kwe insulini.
Zviratidzo zveVhitamini A inoshaya
Kushaikwa kwevitamini A muvana zviri nyore kuziva. Wekutanga kutarisana nekushaiwa kwake kwekupindura kumeso. Saka, mwana wacho anonyunyuta nezvekuona kuora mwoyo, kuputika kwekuwedzera, kupindirana mumakona emasikisi, pa "jecha" mumaziso, maziso ake anogona kuvhiringidza. Mazino anoita nekushaikwa kwecarotenoids nekuwedzerwa kunzwisisika kweeamel, uye ganda - kuongorora. Vana, vane muviri usina mavitamini A, vanowanzotorwa nehutachiona hwehutachiona, vanotonhora kupisa uye vanotambura nekushaya ropa .
Kuti abvise mwana kubva pane zvinetso izvi zvinogona uye mumamiriro ezvinhu epamba, achigadzirisa chirongwa chacho. Zvisinei, kudya chikafu chakazara mu vitamini A hachiri chivimbo chekubudirira. Ichokwadi ndechokuti mafuta anodiwa kuti ashandise carotenoids. Saka, kupa mwana tsvina yemakroti, wedzera madonhwe mashomanana omuorivhi, uye nguva yekaroti saladi nekisiki yakasviba kana mafuta ezuva. Yeuka kuti vazhinji vevhitamini iyi inowanikwa mune zvigadzirwa zvemasvini, maaramondi uye machizha.
Kubatsira - mune pharmacy?
Hazvisi nguva dzose kugoneka kupa mwana chikafu chakakwana chevhitamini, uye nezera rekuda kwe carotenoids
Usati wapa vitamini A kumwana, iva nechokwadi chokuti zvakakosha kuitora, nokuti vana havakurudzirwi nekuda kwekudzivirira nekuda kwekutyisidzira kwe hypervitaminosis. Ichokwadi ndechekuti kudarika kwevhitamini A muvana ingozi yehutachiona hwemaziso, ganda rakaoma, kurutsa, kushungurudzika, kunetseka uye kuonekwa kwechitsvuku paganda. Nezvekurapa kurapa, muyero we vitamine A kune vana hunotsanangurwa nachiremba munyaya imwe neimwe.