Ama-oxalate alungile kubantu abaningi, kodwa abantu abanomsebenzi oshintshile wamathumbu bangase bafune ukunciphisa ukudla kwabo. Ucwaningo alubonisi ukuthi ama-oxalate abangela i-autism noma ubuhlungu obungapheli besitho sangasese sowesifazane, kodwa angandisa ingozi yamatshe ezinso kwabanye abantu.
I-oxalic acid iyinhlanganisela yezinto eziphilayo etholakala ezitshalweni eziningi, okuhlanganisa imifino enamaqabunga, imifino, izithelo, i-cocoa, amantongomane, kanye nembewu (1).
Ezitshalweni, ivame ukuhlangana namaminerali ukuze kwakheke ama-oxalate. Amagama athi “oxalic acid” kanye nelithi “oxalate” asetshenziswa ngokushintshana kwisayensi yokudla okunempilo.
Umzimba wakho ungakhiqiza ama-oxalate ngokwawo noma uwathole ekudleni. I-Vitamin C ingaguqulwa ibe yi-oxalate ngokusebenzisa i-metabolism (2).
Uma zigwinywa, ama-oxalate angahlangana namaminerali ukuze akhe amakhemikhali afaka phakathi i-calcium oxalate kanye ne-iron oxalate. Kwenzeka kakhulu emathunjini, kodwa futhi kungenzeka nasezinso nakwezinye izingxenye zomgudu womchamo.
Kodwa-ke, kubantu abazwelayo, ukudla okunama-oxalates amaningi kungandisa ingozi yamatshe ezinso kanye nezinye izinkinga zempilo.
I-Oxalate iyi-asidi ephilayo etholakala ezitshalweni, kodwa futhi ingakhiwa ngumzimba. Ibopha amaminerali futhi ihlotshaniswa nokwakheka kwamatshe ezinso nezinye izinkinga zempilo.
Enye yezinto ezikhathazayo kakhulu ngempilo ezihambisana nama-oxalates ukuthi angabopha amaminerali emathunjini futhi awavimbele ukuthi amuncwe umzimba.
Isibonelo, isipinashi sicebile nge-calcium nama-oxalates, okuvimbela umzimba ekumunceni inani elikhulu le-calcium (4).
Kodwa-ke, kubalulekile ukukhumbula ukuthi amanye amaminerali ekudleni kuphela anamathela kuma-oxalates.
Nakuba ukumuncwa kwe-calcium esipinatshini kuncipha, ukudla ubisi nesipinatshi ndawonye akuthinti ukumuncwa kwe-calcium ebisini (4).
Ama-oxalates angabopha amaminerali emathunjini futhi aphazamise ukumuncwa kwamanye awo, ikakhulukazi uma ehlanganiswa ne-fiber.
Ngokuvamile, i-calcium kanye nenani elincane le-oxalate zikhona ndawonye emgudwini womchamo, kodwa zihlala zincibilikile futhi azibangeli zinkinga.
Kodwa-ke, ngezinye izikhathi ziyahlangana ukuze zakhe amakristalu. Kwabanye abantu, la makristalu angaholela ekwakhekeni kwamatshe, ikakhulukazi uma amazinga e-oxalate ephezulu futhi ukuphuma komchamo kuphansi (1).
Amatshe amancane ngokuvamile awabangeli izinkinga, kodwa amatshe amakhulu angabangela ubuhlungu obukhulu, isicanucanu, kanye negazi emchameni njengoba edlula e-urethra.
Ngakho-ke, abantu abanomlando wamatshe ezinso bangase belulekwe ukuthi banciphise ukudla kwabo okunama-oxalates amaningi (7, 8).
Kodwa-ke, ukuvinjelwa okuphelele kwe-oxalate akusanconywa kubo bonke iziguli ezinamatshe ezinso. Lokhu kungenxa yokuthi ingxenye ye-oxalate etholakala emchameni ikhiqizwa ngumzimba kunokuba imuncwe ekudleni (8, 9).
Iningi lodokotela bezifo zomchamo manje linikeza ukudla okuqinile okune-oxalate ephansi (ngaphansi kuka-100 mg ngosuku) kuphela ezigulini ezinezinga eliphezulu le-oxalate yomchamo (10, 11).
Ngakho-ke, kubalulekile ukuhlola ngezikhathi ezithile ukuze kutholakale ukuthi kungakanani ukuvinjelwa okudingekayo.
Ukudla okunama-oxalate amaningi kungandisa ingozi yamatshe ezinso kubantu abasengozini. Izincomo zokunciphisa ukudla ama-oxalate zisekelwe emazingeni e-oxalate emchameni.
Abanye basikisela ukuthi ama-oxalates angase ahlotshaniswe ne-vulvodynia, ebonakala ngobuhlungu obungapheli, obungachazeki besitho sangasese sowesifazane.
Ngokusekelwe emiphumeleni yocwaningo, abacwaningi bakholelwa ukuthi zombili lezi zimo cishe azibangelwa ama-oxalates ekudleni (12, 13, 14).
Kodwa-ke, ocwaningweni lwango-1997 lapho abesifazane abangu-59 abane-vulvodynia belashwa khona ngokudla okune-oxalate ephansi kanye nezithako ze-calcium, cishe ingxenye yesine yathola ukuthuthuka kwezimpawu (14).
Abalobi bocwaningo baphetha ngokuthi ama-oxalates ekudleni angase abe mabi kakhulu kunokuba abangele lesi sifo.
Ezinye izindaba eziku-inthanethi zixhumanisa ama-oxalates ne-autism noma i-vulvodynia, kodwa zimbalwa izifundo ezihlole ukuxhumana okungenzeka. Kudingeka ucwaningo olwengeziwe.
Abanye abantu bakholelwa ukuthi ukudla ukudla okunama-oxalates amaningi kungabangela i-autism noma i-vulvodynia, kodwa ucwaningo lwamanje alusekeli lezi zimangalo.
Abanye abasekeli bokudla okune-oxalate ephansi bathi kungcono ukuthi abantu bagweme ukudla okucebile ngama-oxalate ngoba kungaba nemiphumela emibi empilweni.
Kodwa-ke, konke akulula kangako. Okuningi kwalokhu kudla kunempilo futhi kuqukethe ama-antioxidants abalulekile, i-fiber, kanye nezinye izakhamzimba.
Ukudla okuningi okuqukethe ama-oxalates kuyamnandi futhi kunempilo. Kwabaningi, ukuwagwema akudingekile futhi kungaba yingozi.
Amanye ama-oxalate owadlayo ahlukaniswa amabhaktheriya emathunjini akho ngaphambi kokuba ahlanganiswe namaminerali.
Elinye lala magciwane, i-Oxalobacterium oxytogenes, empeleni lisebenzisa i-oxalate njengomthombo wamandla. Lokhu kunciphisa kakhulu inani le-oxalate elimuncwa ngumzimba (15).
Kodwa-ke, abanye abantu abanawo la magciwane amaningi kangaka emathunjini abo ngoba ama-antibiotic anciphisa inani lamakholoni e-O. formigenes (16).
Ngaphezu kwalokho, izifundo zikhombisile ukuthi abantu abanesifo samathumbu esivuvukalayo banengozi enkulu yokuthola amatshe ezinso (17, 18).
Ngokufanayo, amazinga aphezulu e-oxalate atholakale emchameni wabantu abaye bahlinzwa i-gastric bypass noma ezinye izinqubo ezishintsha ukusebenza kwamathumbu (19).
Lokhu kusikisela ukuthi abantu abasebenzisa ama-antibiotic noma abanenkinga yokungasebenzi kahle kwamathumbu bangase bazuze kakhulu ekudleni okune-oxalate ephansi.
Iningi labantu abanempilo enhle lingadla ukudla okucebile ngama-oxalates ngaphandle kwezinkinga, kodwa abantu abanomsebenzi wamathumbu oshintshile kungadingeka banciphise ukudla kwabo.
Ama-oxalates atholakala cishe kuzo zonke izitshalo, kodwa amanye aqukethe inani elikhulu kakhulu kanti amanye aqukethe inani elincane kakhulu (20).
Ubukhulu bokuphakelwa bungahluka, okusho ukuthi okunye ukudla “okune-oxalate ephezulu”, njenge-chicory, kungabhekwa njenge-oxalate ephansi uma ubukhulu bokuphakelwa buncane ngokwanele. Nasi uhlu lokudla okune-oxalate ephezulu (ngaphezu kwama-50 mg ngokuphakelwa okungu-100-gram) (21, 22, 23, 24, 25):
Inani le-oxalate ezitshalweni lisukela phezulu kakhulu kuya phansi kakhulu. Ukudla okuqukethe ama-oxalate angaphezu kwama-50 milligram ngokukhonza kuhlukaniswa ngokuthi “i-oxalate ephezulu.”
Abantu abadla ukudla okune-oxalate encane ngenxa yamatshe ezinso bavame ukucelwa ukuba badle ama-milligram angu-50 e-oxalate ngosuku.
Ukudla okunempilo nokulinganiselayo kungatholakala ngokuqukethwe kwe-oxalate nsuku zonke okungaphansi kwama-50 mg. I-calcium iyasiza futhi ekunciphiseni ukumuncwa kwama-oxalate.
Kodwa-ke, abantu abanempilo abafuna ukuhlala bephilile akudingeki bagweme ukudla okugcwele izakhamzimba ngoba nje banama-oxalates amaningi.
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