Ukubheka ngokucophelela ucwaningo ngama-supplement antioxidant kanye namavithamini
Hamba noma yikuphi imakethe yokudla noma ikhemisi, futhi cishe uzobona ukuxhaswa kwe-antioxidant kanye ne-vithamini yokuzuzisa impilo. Lezi zikhangisi ziqinisa inkolelo yokuthi abaningi bethu banamaphilisi okulwa ne-antioxidant kanye ne-vithamine ayimpilo yethu. Ngenkinga yobuso, lesi siphakamiso sinengqondo. Phela, ukudla okucebile ngama-antioxidants namavithamini (cabanga okuhlaza, imifino eluhlaza kanye nezithelo ezimibalabala) kuye kwaboniswa ukuthi igweme isifo senhliziyo nezinye izinhlobo zomdlavuza.
Kodwa-ke, ucwaningo luveza ukuthi amavithamini kanye nama-antioxidant supplement kubantu abangenayo izakhi ezingenayo izakhi azikho izinzuzo zokuvikela ezempilo. Ngamanye amazwi, uma unempilo engenamaphutha e-vitamin noma amaminerali, izithako zokuvimbela i-antioxidant nezamavithamini zizokwenza kancane ngaphandle kwemali yemali.
Yini eyenziwa yi-Antioxidants?
Ama-antioxidants amavithamini afana ne- vitamin E , i-vitamin C, ne- beta-carotene evikela amangqamuzana omzimba ngokumelene nokucindezeleka okubangelwa oxidative noma umonakalo obangelwa ama-radicals mahhala. Ama-radicals amahhala angama-molecule amaningi asebenzayo aphikisana ngezakhi ezihlukahlukene zeselula ezinjenge-membranes cell, i-nucleic acid, nama-plasma lipoprotein. Ama-radicals amahhala akhiqizwa imizimba yethu ngesikhathi sesimiso esifanayo semetabolism. Lapho ama-radicals ekhululekile ehlangana nama-antioxidants, abe ama-radicals aqinile futhi angabangeli umonakalo.
Ingabe Izithako Zisebenza?
Ngo-2013, i-US Preventive Services Task Force (USPSTF) ishicilele imiphumela evela ekutadisheni ukuhlola ukuthi amavithamini namaminerali amaminerali (kufaka phakathi izithako ze-multivitamin) avimbela umdlavuza nesifo senhliziyo kubantu abangenakho ukudla okunomsoco.
Abacwaningi baphinde bahlola izifundo ezingu-26 (izivivinyo ezingama-24 ezingahleliwe, ezilawulwayo nezinhlolovo ezimbili zama-cohort) futhi abatholanga ubufakazi bokuthi lezi zithako zisiza ukuvimbela isifo senhliziyo, umdlavuza kanye nezinye izimbangela zokufa. Ngaphezu kwalokho, abacwaningi bathola ukuthi i-beta-carotene supplementation ingathuthukisa ingozi yomdlavuza wamaphaphu!
Ngokuphawula, kuyilapho imiphumela evela ku-USPSTF yokubonisa ingekho imiphumela evela ku-supplementation ye-vitamin E, esinye isifundo sibonise ukuthi i-vitamin E iphakamisa ukufa (ukufa).
Ngenxa yeziphumo zabo, i-USPSTF yaqhubeka futhi iphakanyiswa ngokumelene ("ibanga D") usebenzisa i-vitamin E noma izithako ze-beta-carotene ukuze kuvikelwe umdlavuza, izifo zenhliziyo nokunye. Kodwa-ke, ngoba izifundo ezimbalwa eziphakeme kakhulu zihlola imiphumela yokuvimbela kwamanye ama-vitamin supplements nama-multivitamines, i-USPSTF inqamule ukuncoma ngokusetshenziswa kwayo ngokuqondile futhi esikhundleni sayo ibhalwe ubufakazi bokuthi akwanele ukwenza izincomo.
Ngomqondo obanzi, isifundo se-USPSTF esiphakamisa ukuthi akukho nzuzo evela ekufakelweni okunamandla kwamavithamini namaminerali kulabo abanempilo (okungenamkhawulo kwezakhi) kungenye yezifundo eziningana ezinjalo. Isibonelo, ukuhlaziywa kwe-meta eyenziwa abacwaningi baseKorea kusikisela ukuthi ama-antioxidants nezinye izakhi azihluleki ukuvimbela isifo senhliziyo. Amanye ama-meta-ukuhlaziywa kwakamuva abonise ukuthi izithako ezakhiwa izakhi azisebenzi ukuvimbela umdlavuza noma.
Ngaphansi
Ngakho-ke, naphezu kokwenza umqondo ngendlela ejwayelekile, ngokwemigomo yomtholampilo, ama-vitamin kanye ne-antioxidant supplements enza kancane ukuvimbela izifo kulabo abangenakho ukudla okunomsoco.
Abacwaningi basikisela ukuthi isizathu sokuthi izithako zomuntu ngamunye zingenzi lutho ngoba izinhlelo zethu ze-physiologic zinkimbinkimbi - ziyinkimbinkimbi kakhulu ukuba zithinteke nge-vitamin eyodwa noma ukuxuba amavithamini ambalwa. Le nqubo isekelwe ubufakazi obunqunyelwe kusuka ezilingo ezibandakanya izifo ze-physiologic zama-multivitamini aqukethe amanxusa ambalwa abonisa umdlavuza ophansi emadodeni (kodwa hhayi abesifazane).
Ngaphandle kwezifundo ze-vitamin E kanye ne-beta-carotene supplementation kubantu abanobuhle, ucwaningo oluningi olwenziwe ngokuhlola imiphumela yezempilo yokuvimbela amavithamini alufanelekile. Noma kunjalo, kuthathwe ndawonye, kusobala kunoma yimuphi umbonisi onengqondo wokuthi izithako azenzi lutho okuvimbela isifo senhliziyo nomdlavuza.
Ngakho-ke, uma uphilile futhi ungenakho ukudla okunomsoco, sicela ulondoloze imali yakho futhi ungathengi izithako ezinjalo. Esikhundleni salokho, qhubeka udla ukudla okunokulinganisela okugcwele izithelo nemifino enamagatsha.
> Imithombo:
> Bender DA. Isahluko 45. Ama-Radicals nama-Antioxidant Nutrients. Ku: Murray RK, Bender DA, Botham KM, Kennelly PJ, Rodwell VW, Weil P. eds. I-Harper's Illustrated Biochemistry, 29e . ENew York, NY: McGraw-Hill; 2012.
> Frontmann, SP. "Amavithamini nama-Mineral Supplements ku-Prevention Prevention of Disease and Cancer: Ukubuyekezwa Okubukeziwe Kwamabufakazi E-US for Preventive Services Task Force". Ama-Annal of Medicine Internal, ngo- 2013.
> Myung, SK. "Ukusebenza kwamavithamini kanye nama-Antioxidant Supplements ekuvimbeleni izifo zenhliziyo: Ukubuyekezwa kwesistimu kanye nokuhlaziywa kwe-Meta-Ukuhlaziywa kwezilingo ezilawulwa ngokungahleliwe." BMJ, 2013.