Njenge-tea eluhlaza, itiye elimnyama lenziwa ngamaqabunga esitshalo seCamellia sinensis. Amaqabunga ayomile futhi agcobe, okwenza itiye libe nombala omnyama futhi kunambitheka okwedlula uketshezi oluhlaza (olungenayo inqubo yokuvutshelwa).
Kuncike ekutheni liqinile kangakanani, itiye elimnyama liqukethe ama-50 mg we-caffeine indebe ngayinye. (Uma kuqhathaniswa, itiye eluhlaza liqukethe i-8 kuya ku-30 mg indebe ngayinye, kanti ikhofi iqukethe 100 kuya ku 350 mg.)
Ithimba elimnyama liqukethe inani le-antioxidants, okuyizinto eziyinkimbinkimbi ezisiza umzimba ukuba ulwe nama-radicals mahhala (amakhemikhali ase-imikhiqizo eyaziwa ngokulimaza i-DNA). Lezi zinhlayiya ze-antioxidants zifaka i-quercetin, into ethiwa ukulwa nokuvuvukala nokusekela umsebenzi omzimba onempilo.
Izinzuzo zeTiye Elimnyama
Nakhu kubheka isayensi ngemuva kwemiphumela yezempilo yetiye omnyama:
1) Impilo Yenhliziyo
Kuze kube manje, ucwaningo olwenziwe ngamathambo omzimba we-tea omnyama luye lwaveza imiphumela ehlanganisiwe. Isibonelo, ukubuyekezwa kuka-2009 kwezifundo eziyisishiyagalolunye ezishicilelwe ngaphambili (kufaka phakathi inani labalinganiselwa ku-195,000) baphetha ukuthi ukuphuza izinkomishi ezintathu zamathambo amnyama noma aluhlaza nsuku zonke kunciphisa ingozi yokushaywa yisisindo ngamaphesenti angu-21. Kodwa-ke, ucwaningo olwenziwa ngo-2007 lwabadala abangu-31 (abaneminyaka engama-55 nangaphezulu) lwathola ukuthi izinyanga eziyisithupha zokusetshenziswa kwetiya ezimnyama azizange zithinte kakhulu noma yiziphi izici ezingozini zomzimba (njengokuvutha nokucindezela kwegazi). Kokubili Isikhungo Sikazwelonke Sokuqeda Imithi Ephelele kanye Nezokwelapha Nezikhungo Zikazwelonke Zempilo zikhomba kulolu cwaningo njengobufakazi bokuthi itiye elimnyama lingenalo umthelela empilweni yempilo.
2) Isifo sikashukela
Esikhathini sokutadisha kwe-laboratory eshicilelwe ngo-2009, ososayensi bathola ukuthi izinhlanganisi ezikhishwe itiye elimnyama zaziphumelela kakhulu ekunciphiseni ukondwa kwe-ushukela wegazi kunalabo abakhishwa itiye eluhlaza kanye netiyi i-oolong . Ngaphezu kwalokho, ucwaningo lwabantu abangu-1,040 olwalukhulile olwenziwa ngo-2009 lwathola ukuthi ukudla isikhathi eside kwethimba elimnyama kanye / noma oluhlaza kuhlotshaniswa nokusabalala kwesifo sikashukela esincane.
3) Ukuvimbela umdlavuza
Nakuba ezinye izifundo zibonisa ukuthi ukusetshenziswa okuvamile kwetiya omnyama kunganciphisa ingozi yomdlavuza, abanye bangabika izinzuzo ezihlobene nomdlavuza wetiye ezimnyama ezitholayo. Ngaphezu kwalokho, ucwaningo oluthile lubonisa ukuthi i-black tea ukusetshenziswa ingase ibe nomthelela omuhle ekuhlosweni komdlavuza webele we-breast kanye nesisu se-estrogen-receptor positive / progesterone-receptor positive.
Ukuphuza Ithimba Elimnyama Lempilo
Ukusetshenziswa kwetiya ezimnyama akuzange kuboniswe ukuvimbela noma ukuphatha noma iyiphi impilo. Nakuba ukuphuza itiye elimnyama kunganikeza izinzuzo ezithile zezempilo, kubalulekile ukubonana nodokotela wakho ukuthola ukuthi iyiphi insizakalo engakufanelekela yona. Kwamanye abantu, ukuphakama okukhulu kwe-caffeine kungabangela imiphumela eminingana emibi (njengokukhathazeka, izinga lokushaya kwenhliziyo nokucindezela kwegazi, kanye nokwehliswa kwezimpawu zesilonda).
> Imithombo:
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> Mukamal KJ, MacDermott K, Vinson JA, Oyama N, Manning WJ, Mittleman MA. "Ucwaningo lwezinyanga ezingu-6 oluthile oluthile oluthile lwetiye omnyama nezinkinga ze-cardiovascular risk factors." Am Heart J. 2007 154 (4): 724.e1-6.
> Isikhungo Sikazwelonke seMithi Ephelele Neyomunye. Ucwaningo Lokubheka: Ukuphuza Ithimba Elimnyama Ayikho Impikiswano Ezimbangela Zeengozi Zezinhliziyo. Okthoba 2009.
> Izikhungo Zikazwelonke Zempilo. Itiye elimnyama: Izithako ze-MedlinePlus. Agasti 2009.
> Panagiotakos DB, Lionis C, Zeimbekis A, Gelastopoulou K, Papairakleous N, Das UN, Polychronopoulos E. "Ukudla kwetikhathi eside kuhlotshaniswa nokwehla kwesifo sikashukela (uhlobo 2) lwesifo sikashukela phakathi kwabantu abadala aseziqhingini zaseMedithera: Ucwaningo lwe-MEDIS epidemiological . " Yonsei Med J. 2009 28; 50 (1): 31-8.
> Sun CL, Yuan JM, Koh WP, Yu MC. Ithimba elihlaza, itiye elimnyama kanye nengozi yomdlavuza we-colorectal: ukuhlaziywa kwe-meta-analysis of epidemiologic. " I-carcinogenesis. 2006 27 (7): 1301-9.
> I-Tang NP, i-Li H, i-Qiu YL, i-Zhou GM, i-J. "Ukusetshenziswa kwetayela kanye nengozi yomdlavuza we-endometrium: i-metaanalysis." Am J Obstet Gynecol. 2009 201 (6): 605.e1-8.