I-caffeine iyisimangaliso esitholakala emanzini, amajikijolo, namaqabunga ezitshalo ezithile. I-caffeine isetshenziswa kakhulu njengekhofi noma imikhiqizo yetiye, futhi abanye baye bacabanga ukuthi lezi ziphuzo zingase zibe ukudla okudliwa kakhulu kunazo zonke emhlabeni.
Ngenxa yokuthi i-caffeine ivame kakhulu kuwo wonke amasiko abantu, kwenziwa ucwaningo oluningi ukuthola imiphumela yezempilo ye-caffeine.
Ubudlelwane phakathi kwe-caffeine nesifo senhliziyo, kanye nokuxhumano kwe-caffeine-blood pressure, kuye kwaba amasimu okusebenza ngokucophelela okutadisha.
Yiziphi Izikhuthazo?
Izikhuthazo, ngencazelo, ukwandisa umsebenzi wesistimu yezinzwa zomphakathi, yingakho zenza uzizwe uphapheme, ugxile futhi uqaphele. Noma kunjalo, lo msebenzi okhuphukayo ungabangela futhi igazi le-containerction yegazi, okungase kwandise ukucindezelwa kwegazi futhi kuguqule ukunikezwa kwegazi enhliziyweni. Eqinisweni, iningi lemiphumela eyingozi yezikhuthazo ezinamandla ezifana ne-cocaine ne-methamphetamine yimbangela eqondile yomsebenzi wabo emithanjeni yegazi nenhliziyo.
Ngenxa yokuthi i-caffeine iyishukumisayo, kunesizathu esihle sokusola ukuthi ikhofi nomfutho wegazi ophezulu kungenzeka uhlobene. Nokho, i-caffeine ivuselela kakhulu futhi inempilo emfushane emzimbeni. I-caffeine nayo ivuselela ukuzilimaza ngoba isebenza ezintsheni ukwandisa izinga lokuphuma kwayo.
I-Caffeine, Ukucindezelwa Kwegazi, Nenhliziyo
Ubufakazi bubonise ngokuphindaphindiwe ukuthi ukusetshenziswa kwe-caffeine akukwandisi ingozi yegazi eliphezulu, isifo senhliziyo, noma isifo senhliziyo . Esinye isifundo esaziwa kakhulu sahlola abesifazane abangaphezu kuka-85 000 eminyakeni engamashumi ayishumi futhi sathola ukuthi kwakungekho ingozi enkulu yalezi zifo, ngisho nakwabesifazane abaphuza izinkomishi ezingaphezu kweziyisithupha zekhofi ngosuku.
Ikomidi elihlangene leNational of Hypertension liye lachaza ngokucacile ukuthi abukho ubufakazi obuxhumanisa ikhofi / itiye nomfutho wegazi ophezulu.
Ngenkathi ezinye izifundo zamuva zibonise ukuxhumana okubuthakathaka phakathi kwe-caffeine nokuphakama kwegazi, imiphumela yinkimbinkimbi futhi ibheka nje imiphumela yesikhashana.
Isibonelo, isifundo esisodwa esicashunwe kabanzi sathola ukuthi ukucindezeleka kwegazi kuvele kancane kancane ezindabeni ngokushesha ngemva kokudla isiphuzo se-caffeinated nokuthi lokhu kukhishwa kwegazi kuphakama kakhulu kubantu abano-high blood pressure. Noma kunjalo, lezi ziphakamiso zazingekho ezinkulu futhi zahlala isikhathi esifushane. Ucwaningo lubonise nokuthi cishe abantu abangamaphesenti angu-15 abanomfutho wegazi ophezulu ophuzayo, ukuphuza isiphuzo se-caffeinated empeleni kubangele ukuncipha kwengcindezi yegazi.
Ucwaningo olubalulekile olushicilelwe ngo-2007 lwasekela ngokuqhubekayo ubufakazi obukhona obufakazela ukuthi:
- Izinguquko zegazi ze-caffeine zashintsha kakhulu futhi ziphila isikhathi esifushane
- I-caffeine ayinaso ekubambeni izinkinga zegazi ezihambisana nomfutho wegazi ophezulu nesifo senhliziyo
Olunye ucwaningo oluthakazelisayo lubonise ukuthi ubuhlobo be-caffeine-blood pressure bungaba nzima nakakhulu kunalindelekile.
Ucwaningo luhlolisise ukuthi inani lekhofi eladliwe lithinte kanjani ingozi yokuthuthukisa umfutho wegazi ophezulu. Ngenkathi imiphumela ibonisa ukuthi ingozi yokucindezeleka kwegazi yiyona ephansi kakhulu kulabo abangaphuzi ikhofi, futhi yabonisa ukuthi labo abaphuza ikhofi eminingi basengozini efanayo. Ngokwehluleka okungalindelekile, abantu abaphuza kuphela amancane amakhofi (1-3 izindebe ngosuku) babonakala benengozi enkulu kakhulu. Kukholelwa ukuthi ngokuhamba kwesikhathi, umzimba ubekezelela imiphumela evuselelayo ye-caffeine.
Izinzuzo zezeMpilo
Ikhofi kanye netiye empeleni kungaba nezinzuzo eziningi zezempilo. Nakuba ithathi eluhlaza lithandwa iminyaka eminingana njengomthombo onempilo wamavithamini nama-antioxidants, ucwaningo olusha luye lwabonisa ukuthi iziphuzo ezimnyama ezifana netizi omnyama nekhofi empeleni zingcono kuwe.
Lezi ziphuzo ezimnyama ziwumthombo ocebile wezinhlanganisela ezibizwa nge-polyphenols, ezingase zivikeleke kokubili izifo zenhliziyo nezinhlobo eziningana zomdlavuza. Ucwaningo lwamuva, isibonelo, luye lwabonisa njalo ukuthi kunciphise ingozi yesifo somdlavuza wesibindi kumadoda aphuza ikhofi.
Ikhofi ne-tea polyphenols kuye kwaboniswa ukunciphisa izinga lamaplatelet asetshenzisiwe egazini, okungasiza ekuvimbeleni i-blood clots engabangela ukushaywa. I-Polyphenols nayo iboniswe ukunciphisa ukuhlushwa komzimba weprotheyini esebenzayo ye- C (CRP), isici esibalulekile ekuvuvukala. Ukuncipha kwe-CRP kuye kwaboniswa ngaphambilini ukunciphisa ingozi yesifo senhliziyo, ukuhlasela kwenhliziyo, nezinhlobo ezithile zezifo zezinso.
Nakuba ikhofi netiyi kunezinhlobo eziningi ze-polyphenols, ezinye izinhlobo ze-polyphenols zingatholakala ekudleni okuhlukene. Zonke izinhlobo ze-polyphenols ziye zaboniswa ukuthi zinezinzuzo zezempilo, kodwa okuzuzisa kunazo zonke ngaphandle kwalawo okhofi kanye netiyi kubonakala sengathi:
- I-polyphenols yamagilebhisi
- Apple polyphenols
- I-polyphenols ye-chocolate (ishokoledi emnyama ene-cocoa angaphezu kwama-80)
Nakuba ubufakazi besayense kufanele buqiniseke ukuthi uyikhofi noma iwayini lokuphuza itiye, akusho ukuthi kufanele uqale ngenxa yezinzuzo zezempilo ezingenzeka. Ukudla okunomsoco ogcwele izithelo nemifino nakho kuyimithombo emikhulu yama polyphenol kanye nama-polyphenol ahlobene nazo.
Imithombo:
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> Steptoe, > A et > al. Imiphumela YeTiye Ezingapheli I-Acake Platelet Ukuqalisa Nokuvuvukala: I-Double-Blind > I-Placebo-Elawulwayo > Isivivinyo. I-antherosclerosis 2007; 193 (2): 277-82.
> Bravi, F et al. Ukuphuza ikhofi kanye neHepatocellular Carcinoma Risk: A Meta-Analysis. I-Hepatology 2007; 46 (2): 430-5.
> Uiterwaal, CS et al. Ikhofi > I-intake >, ne-Incidence of Hypertension. I-American Journal of Nutrition Clinic 2007; 85 (3): 718-23.
> Vlachopoulos, CV et al. Umthelela Wokusetshenziswa Kwekhofi Okungapheli Ku-Aortic Stiffness kanye ne-Wave Reflections in Patients Hypertensive. I-European Journal of Clinical Nutrition 2007; 61 (6): 796-802.
> Willett, WC et al. Ukusetshenziswa kwekhofi kanye neCoronary Heart Heart in Women. Ukulandelela Kwaminyaka Eyishumi. I-JAMA 1996; 275 (6): 458-462.
> Howard, D et al. I-Coffee ne-Tea Inakekele kanye Nengozi Ye-Myocardial Infarction. I-American Journal of Epidemiology 1999; 149: 162-7.