Icyumweru cya 18-25 byitwa igihe cyo kuzamuka. Kuri iki cyiciro, uburemere bwamagi, umuvuduko w amagi, nuburemere bwumubiri byose biriyongera byihuse, kandi ibisabwa mumirire ni byinshi cyane, ariko kwiyongera kwifunguro ryibiryo ntabwo ari byinshi, bisaba gutegura imirire muriki cyiciro ukwayo.

A. Ibintu byinshi biranga ibyumweru 18-25 byicyumweru: (Fata urugero rwa Hyline Gray)

1. Theumusaruro w'igiigipimo cyiyongereye kuva ku byumweru 18 kigera kuri 92% mu byumweru 25 by’amavuko, byongera umusaruro w’amagi hafi 90%, kandi amagi yakozwe nayo agera kuri 40.

2. Uburemere bw'amagi bwiyongereyeho garama 14 kuva kuri garama 45 kugera kuri garama 59.

3. Uburemere bwiyongereyeho 0.31 kg kuva kuri 1.50 kugeza kuri 1.81 kg.

4. Amatara yiyongereye Igihe cyo kumurika cyiyongereyeho amasaha 6 kuva amasaha 10 kugeza kumasaha 16.

5. Ikigereranyo cyo kugaburira ibiryo cyiyongereyeho garama 24 kuva kuri garama 81 mugihe cyibyumweru 18 cyamavuko kigera kuri garama 105 mubyumweru 25 byamavuko.

6. Inkoko zikiri nto zigomba guhura nibibazo bitandukanye byo gutangira umusaruro;

Kuri iki cyiciro, ntabwo bidashoboka kwishingikiriza kumubiri winkoko kugirango ihindure kugirango ihuze imirire. Birakenewe kunoza imirire yibiryo. Intungamubiri nkeya yibiribwa hamwe no kudashobora kongera ibiryo byihuse bizatera imirire kunanirwa guhuza ibyo umubiri ukeneye, bikavamo itsinda ryinkoko rifite imbaraga zidahagije kandi rikura neza, bigira ingaruka kumikorere yumusaruro.

B. Ingaruka zo gufata imirire idahagije

1. Ingaruka zingufu zidahagije hamwe no gufata aside amine

Ifunguro ryibiryo byiyongera buhoro buhoro kuva ibyumweru 18 kugeza 25, bikavamo ingufu zidahagije hamwe na acide amine kugirango ihuze ibikenewe. Biroroshye kugira impinga nkeya cyangwa ntayo yo kubyara amagi, gusaza imburagihe nyuma yimpinga, uburemere buke bwamagi, nigihe cyo gutanga amagi. Igihe gito, uburemere bwumubiri kandi ntiburwanya indwara.

2. Ingaruka za calcium idahagije no gufata fosifore

Kunywa bidahagije bya calcium na fosifore bikunda kunama keel, karitsiye, ndetse no kumugara, syndrome de fatigue ya layer, hamwe nubwiza bwamagi yamagi mugihe cyanyuma.