Inyaniso malunga neSiraphu ePhakamileyo yeFructose

Umxholo

• Uphengululo lwe

Ifunyenwe kukutya okususela kwisoda kunye nesaladi yokunxiba ukusika okushushu kunye nesonka sengqolowa, esi sinandi sisembindini wenye yezona ngxoxo zishushu kwimbali yesondlo. Kodwa ngaba ngokwenene kuyingozi kwimpilo yakho nakwisinqe? UCynthia Sass, RD, uphando.

Kule mihla awukwazi ukuvula i-TV ngaphandle kokuva into malunga ne-high-fructose corn syrup (HFCS). Ukutya okukwi-cookie kunye nee-aisles zeziselo ezinxilisayo, isongezo sibuye sihlale kwezinye iindawo ezingalindelekanga, ezinje ngeemveliso zobisi, inyama egqityiweyo, isonka esipakishwe, ukutya okuziinkozo kunye nezinto zokuhambisa. Ukuthandwa kwayo phakathi kwabavelisi kulula, ngokwenene: Yindlela engabizi kakhulu yokongeza ubumnandi kukutya ngelixa usandisa ubomi babo beshelfini.

Kodwa kumthengi, "iindaba" malunga ne-HFCS zincinci. Yidemon yokutya ebangela ingxaki yokutyeba kakhulu kunye neemeko zempilo ezingapheliyo, bathi abagxeki. Nangona kunjalo iintengiso ezivela kuMbutho wabaCoci beMbombo zonke izibonelelo zeswiti, ukuyigcina ikhuselekile ngokugqibeleleyo xa isetyenziswa ngokumodareyitha. Kwaye kwangaxeshanye, iinkampani ezinje ngePepsi kunye neKraft zisusa i-HFCS kwezinye zeemveliso zazo kwaye zibuyele kwiswekile endala endaweni yoko. Ke ukholelwa ntoni? Sicele iingcaphephe ukuba ziphonononge ezine kwiimpikiswano ezijikeleze isweetener.

1. Ibango: Yonke-yendalo.

Inyaniso: Kubaxhasi, into yokuba isiraphu yengqolowa ephezulu ye-fructose ivela kwi-corn isusa ngokusemthethweni "kwizithako ezenziweyo". Kodwa abanye abayabelani naloo mbono, bekhomba kuthotho oluntsonkothileyo lweempendulo zamachiza ezifunekayo ukwenza isinciphisi esisekwe kwisityalo. Ukwenza i-HFCS, isiraphu yengqolowa (iswekile) inyangwa ngee-enzymes ukuyiguqula ibe yi-fructose, ucacisa uGeorge Bray, MD, ingcali kwezokutyeba kunye ne-metabolism kwiPennington Biomedical Research Centre eLouisiana State University. Emva koko idityaniswe nesiraphu yengqolowa emsulwa ukuvelisa into ene-fructose engama-55% kunye neepesenti ezingama-45 zeswekile. Nangona itafile yeswekile ine-makeup efanayo (i-50-50 fructose-to-glucose ratio), iibhondi phakathi kwe-fructose kunye ne-sucrose zahlulwe kulungiso lwe-HFCS, iyenza ukuba ingazinzi ngokwamachiza- kwaye, abanye bathi, iyingozi ngakumbi umzimba. Nabani na obiza loo nto 'yendalo' usebenzisa kakubi eli gama," utsho uBray.

2. Ibango: Isenza sityebe.

Inyaniso: Umntu oqhelekileyo ufumana iikhalori ezili-179 ezivela kwi-HFCS ngosuku-malunga nokuphindaphinda kabini kuma-1980s-kunye ne-209 calories kwi-ushukela. Nokuba unokuwasika nje loo manani ngesiqingatha, uya kuphulukana neeponti ezi-2 ngenyanga. Kodwa nge-sweetener ephuma kuyo yonke indlela yevenkile, ukubuyisela umva kulula ukutsho kunokukwenza, "utshilo u-Andrew Weil, MD, umlawuli weYunivesithi yaseArizona Centre for Integrative Medicine. "Kwaye akuncedi ukuba iimveliso eziqulethe ihlala ifikeleleka ngakumbi kunezo zenziwe nezinye iziswiti. "

Ngaphandle kwegalelo elingaphezulu kweekhalori kukutya kwethu, isiraphu yengqolowa ene-high-fructose icingelwa ukuba ipakishe iipawundi ngenxa yesiphumo sayo kwingqondo. Olunye uphononongo oluvela kuJohn Hopkins lufumanise ukuba i-fructose ivuselela umdla wokutya, ikwenza uzive ungonelisekanga kwaye uthambekele ekutyeni kakhulu. Kodwa ngaba i-HFCS inokuba nezi ziphumo kuneswekile, ekwapakisha inani elifanelekileyo lefructose? Hayi ngokophononongo lwakutsha nje olupapashwe kwi Ijenali yaseMelika yeZondlo zeklinikhi. Emva kokuhlalutya izifundo ze-10 zangaphambili ezithelekisa i-sweeteners ezimbini, abaphandi abafumananga mmahluko ngokubhekiselele kwi-glucose yegazi kunye neempendulo ze-insulin, ukulinganisa indlala, kunye namanqanaba amahomoni alawula indlala kunye nokuhlutha. Okwangoku, kubalulekile ukuba ukhumbule ukuba ngenxa yokuba beziphethe ngendlela efanayo emzimbeni oko akuthethi ukuba isiraphu yengqolowa ene-fructose ephezulu, okanye iswekile kuloo nto, inobuhlobo esinqeni. "Ukulawula ubunzima, kufuneka utye ngaphantsi kokubini kwaye ugxininise 'ekutyeni okulungileyo-fructose'," kusho uBray. "Isiqhamo asiqulathanga kuphela i-fructose encinci kuneemveliso ezenziwe nge-HFCS, iza neevithamini, iiminerali kunye nokuzalisa ifayibha."

3. Ibango: Linokusigulisa.

Inyaniso: Ngelixa isiraphu yengqolowa ye-high-fructose ifana neswekile ngeendlela ezininzi, umahluko ophambili unokubakho kwimeko yezempilo enxulunyaniswa nayo, ukusuka kwisifo seswekile ukuya kwisifo sentliziyo. Kwisifundo esinye esivela kwiYunivesithi yaseRutgers, abaphandi bafumanise ukuba ii-sodas ezinencasa nge-HFCS zinamanqanaba aphezulu e-carbonyls asebenzayo, iikhompawundi ekukholelwa ukuba zibangela ukonakala kwethishu kunye nokuphakamisa umngcipheko wohlobo lweswekile yesi-2.

Nangona kunjalo, ngumthamo omkhulu we-fructose esiyisebenzisayo-nokuba ivela kwisiraphu yengqolowa ene-high-fructose okanye ukutya okuneswekile-okubonakala ngathi kuyingozi enkulu kwimpilo yethu. "Ngelixa iglucose icolwa kwiseli nganye esemzimbeni, i-fructose yehla esibindini," ucacisa uWeil, ehlisa i-HDL ("elungileyo") ye-cholesterol kunye namaqondo anyusa i-LDL ("embi") ye-cholesterol kunye ne-triglycerides. Uphononongo olutsha olupapashwe kwi Ijenali yaseMelika yeZondlo zeklinikhi bafumanise ukuba abasetyhini abasela iziselo ezibini okanye ngaphezulu eziswiti ngosuku bonyusa umngcipheko wesifo sentliziyo ngama-35 eepesenti. Amanqanaba aphezulu e-fructose nawo adityaniswa nokwanda kwe-uric acid, enokuthi ikhokelele ekonakaleni kwezintso kunye ne-gout kunye nokuthintela imithambo yegazi ekuphumleni, inyuse uxinzelelo lwegazi. "Imizimba yethu inomthamo olinganiselweyo wokuphatha i-fructose ngamanani aphezulu kangaka," utsho uWeil, "kwaye ngoku siyazibona iziphumo ebezingalindelekanga."

4. Ibango: Ine-mercury.

Inyaniso: Ukoyikisa kutshanje kugxile kwizifundo ezibini zamva nje ezifumanise umkhondo we-mercury kwi-HFCS: Kwingxelo enye, iisampulu ezilithoba kwezingama-20 ze-HFCS zazingcolisiwe; kweyesibini, phantse isinye kwisithathu se-55 yokutya okunegama le-brand kwakungcoliswe. Umthombo okrokrelekayo wokungcoliseka yayisisithako esekwe kwimekyuri esasetyenziselwa ukwahlula i-cornstarch kwi-corn kernel-iteknoloji esele ikho iminyaka kwaye isasetyenziswa kwezinye izityalo. Iindaba ezimbi zezokuba awukwazi ukuqiniseka ukuba i-snack yakho ye-HFCS-sweetened iqulethe imekyuri.

"Nangona oku kufuneka kuthathelwe ingqalelo kakhulu, akufuneki soyike," utshilo uBarry Popkin, Ph.D., unjingalwazi wezondlo kwiYunivesithi yaseNorth Carolina kunye nombhali weThe World Is Fat. "Ulwazi olutsha, ngoko ke izifundo kufuneka ziphindwe." Okwangoku, jonga inani elikhulayo leemveliso zasimahla ze-HFCS kwintengiso. Qiniseka ukuba uskena iilebheli-nokuba kukutya okune-organic kunokuqulatha isithako.

Kwaye ngelixa ukuyo, nciphisa ukutya kwakho iswekile kunye nezinye izimuncumuncu ezongeziweyo. Ngelixa uninzi lwezi zinto zixhalabisayo malunga nesiraphu yengqolowa ephezulu ye-fructose ingekasonjululwa, inye into wonke umntu anokuvumelana ngayo: Ukusika iikhalori ezingenanto linyathelo lokuqala lokugcina ubunzima obunempilo- kwaye ekugqibeleni, ukuthintela izifo.

Cofa apha ukuze ufumane ingxelo evela kuMbutho wabacoci beCorn.

Uphengululo lwe