Imizimba yethu inama-hormone elawula zonke izici zesimetabolism, futhi lokhu kuhlanganisa nokudla nesisindo somzimba. Kuye kwatholakala ama-hormone amaningi asithinta ukuthuthukiswa kokukhuluphala ; enye yalezi yi-ghrelin.
Kuyini iGhrelin?
Ngokusho nje, i-ghrelin iyi-hormone evuselela ukudla. Ngakho-ke, noma yini eyandisa amazinga e-ghrelin izokwandisa inxanxathela, futhi lokhu kungaholela ekuzuzeni isisindo nokukhuluphala.
I-Ghrelin ikhiqizwa ikakhulukazi ngesisu nangesidumbu . Kutholakale ukuthi idlala indima kulokho okuyaziwa ngokuthi yindlala yesikhathi sokudla, kanye nokulawulwa kokuthola isisindo nokulahlekelwa ngokuhamba kwesikhathi.
I-Ghrelin ngezinye izikhathi ibhekwa njengomlingani we-leptin ngoba i- leptin (enye i-hormone elawula ukudla, eyenziwa yi-adipose tissue) igxila ukudla njengoba amazinga ayo ekhuphuka.
Lapho abacwaningi bethola ukuthi ukufaka i-ghrelin ngamagundane kubakhuthaza ukuba bakondle futhi empeleni bakhiqize ukukhuluphala kulezi zinduku, isithakazelo sakhula ekuchazeni ukuthi i-ghrelin ingayidlala kanjani isifo sokukhuluphala kubantu.
Yini Okukhulisa i-Ghrelin?
Abacwaningi bathole ukuziphatha okuningi kanye nezici ezingakhuphula noma ukunciphisa amazinga e-ghrelin emzimbeni. Ukuziphatha okukodwa okwandisa amazinga e-ghrelin akutholaki ukulala ngokwanele . Ngesikhathi eside, ukuthola amahora angama-7 kuya kweziyisishiyagalolunye wokulala okungaphazanyiswa ngaso sonke isikhathi kungaholela ekwandeni kwamazinga e-ghrelin-okuguqula isifiso esikhulu, ukondla okuningi kwekhalori, nokuzuza kwesisindo.
Ngokuphambene, ukulala ngokwanele njalo ebusuku kusihlisa ighrelin, ngaleyo ndlela kunciphisa ukudla. Njengoba kuvela, kunesizathu sezinto eziphilayo zokulala "phakathi kwamabili ama-munchies," ngemva kwakho konke!
Esikhathini sokudla phambili, ukudla ama-carbohydrate ahlanzekile kakhulu, ikakhulukazi lapho kungekho khona amaprotheni anele ne-fiber, kungabangela amazinga e-ghrelin amaningi, ngoba iprotheyini ne-fiber ephezulu enganciphisa amazinga e-ghrelin kuze kube lapho ubuchopho bomuntu buthola khona isibonakaliso sokuthi isidumbu sidle ngokwanele futhi sitshela umzimba, ngesidlo esinelisekile, ukuthi kufanelekile ukuyeka ukudla.
Yingakho abaningi bethola ukuthi kungenzeka ukuba badle ama-potato chip ngemuva kwama-mbatata chip noma isinkwa esikhulu esimhlophe esicwengile ngaphandle kokuzizwa egcwele-ukudla okunjalo akuqukethe amaprotheni amaningi noma i-fibre yokuvala isignali ze-ghrelin ebuchosheni.
Ngamanye amazwi, ngokudla kwe-carbohydrates ehlanjulisiwe, ngoba ubuchopho bungatholanga isignali ukuthi umzimba uthola izakhi ezibalulekile, kuvumela umzimba ukuba uqhubeke udla, ngesidlo esinganelisekile. Ngokuvamile, amazinga e-ghrelin kufanele akhule ngaphambi kwesikhathi sokudla (ukukwazisa ukuthi yisikhathi sokudla), futhi wehle emva kwesikhathi sokudla. Noma kunjalo, ukusetshenziswa kwamakhemikhalididididi ahlanzekile, njengoba kuphawuliwe ngenhla, kungaphazamisa ukugeleza okujwayelekile.
Yini Eyanciphisa i-Ghrelin?
Njengoba kungase kutholakale kusukela engxoxweni kuze kube manje, ukuziphatha ngokuvamile okuhlotshaniswa nokuphila okunempilo nokudla okunempilo kungagcina amazinga e-ghrelin esheke. Lezi zihlanganisa ukudla izithelo nemifino kanye nezinye ukudla okuphezulu (njengezinhlamvu ezigcwele); ukudla okudla okunomsoco (njengezithelo nemifino, kanye nokudla okunikeza amaprotheni aphelele); futhi uthole ukulala ngokwanele. Imiphumela ayisahambisani nalokho mayelana nokuhlinzwa noma ukuhlinzwa kwesisu esiswini kunomthelela ekunciphiseni kwe-ghrelin.
Imithombo:
I-Cummings DE, i-Weigle DS, i-Frayo RS, i-Breen PA, ne-al. Amazinga e-Plasma ghrelin ngemva kokulahlekelwa kwesisindo sokudla noma ukuhlinzwa kwesisu esiswini. N Engl J Med 2002; 346: 1623-1630.
Klok MD, Jakobsdottir S, ML Drent. Indima ye-leptin ne-ghrelin ekulawulweni kokudla nokudla komzimba kubantu: ukubuyekezwa. Obes uMsombuluko 2007; 8: 21-34.
I-Tschop M, uSmiley DL, i-Heiman ML. I-Ghrelin iveza ukungahleleki kwamagundane. Uhlobo 2000; 407: 908-913.
U-Mozaffarian D, uHao T, uRimm EB, uWillett WC, et al. Izinguquko ekudleni nasekuziphatheni nasekuzuzeni isikhathi eside kwenzalo abesifazane nabesilisa. N Engl J Med 2011; 364: 2392-2404.