Ngaphambi kokunqamuka kokuya esikhathini, abesifazane banengozi encane yokuba nesifo senhliziyo kunabesilisa, kodwa lokho kushintsha ngemva kokudlula koguquko. Nakuba isizathu singaqondwa ngokugcwele, esisha ukutadisha ku-Journal of Physiology inikeza ithuba elilodwa: izinguquko zamahomoni ukunciphisa umthamo zabesifazane for yakha imithambo yegazi emincane emisipha yakho, okwandisa ingozi yezimo zenhliziyo futhi ikakhulukazi uhlobo 2 sikashukela.
Ngenhlanhla, abacwaningi basikisela, lokhu akudingekile ukuba kugwemeke, ngoba ukuzivocavoca kwesikhashana kungasiza - ngemva kokunqamuka kokuya esikhathini, kodwa ikakhulukazi ngaphambi kwalokho.
Abacwaningi babheke amaqembu amabili abesifazane: abangu-12 baneminyaka ephakathi kuka-59 no-70 kanti abahlanu baneminyaka ephakathi kuka-21 no-28. Womabili la maqembu enziwe i-biopsy yemisipha yethanga ngaphambi kokuqala, futhi aqeqeshwa esikhathini esingamaviki ayisishiyagalombili esebenzisa amabhayisikili okuphotha amaphakathi ukuya phezulu.
Iqembu elincane elaqala ukuvivinya umzimba ngaphambi kokuba lifinyelele ekunqamukeni kokuya esikhathini labonisa ukwanda kwenani lama-capillaries, noma imithambo yegazi emincane, esicutshini sohlaka lwamathambo ekupheleni kwenkathi yocwaningo, kuyilapho iqembu elidala lingazange. Ama-capillaries, asiza ushukela namafutha ukuthi afakwe emisipheni ukuze asetshenziswe ngokuphumelelayo njengophethiloli, nawo anomthelela ekumelana ne-insulin. Yingakho ukuba namandla amancane okuthuthukisa amasha kungaholela ezinkingeni zenhliziyo nemithambo yegazi.
Izinzuzo zokuzivocavoca ngemva kokuya esikhathini
Nokho, lokho akusho ukuthi ukuzivocavoca kwangemva kokuya esikhathini akunakwa. Esifundweni, nakuba bengabonisi ukukhula kwezinwele okuphawulekayo, iqembu elidala kuthuthukise umthamo wakho wokuzivocavoca ngamaphesenti angu-15. Lokho, kukodwa, kuwukuqiniswa kwenhliziyo nemithambo yegazi.
Ukuxhumana phakathi kokulahlekelwa kwe-estrogen, okwenzeka ngesikhathi sokunqamuka kokuya esikhathini, kanye nezinguquko ezimbi emithanjeni yegazi kusungulwe kahle. Ucwaningo lwangaphambili luphakamise ukuthi ezinye zezimpawu eziyinhloko zokunqamuka kokuya esikhathini, njenge ama-sofocos futhi i ukuphazamiseka kokulala, ingase ihlobane nale nqubo yokuguga kwemithambo yegazi.
Imikhawulo eyinhloko yocwaningo lwamanje usayizi omncane wesampula kanye nesikhathi esifushane. Noma kunjalo, kuyisiqalo esithembisayo esingaholela ocwaningweni olukhulu oluhlola imithelela yesikhathi eside engaba khona yoshintsho lwemithambo yegazi ngesikhathi sokunqamuka kokuya esikhathini noma ukuguquguquka kokuya esikhathini.
Phakathi naleso sikhathi, kunzima ukudlula isiphetho sokuthi ngisho nezinyanga ezimbalwa zokuqeqeshwa okuvamile zingaba nomthelela omkhulu empilweni yenhliziyo, kokubili manje nasesikhathini esizayo.