I-Niacin

I-Niacin uhlobo lwevithamini B. Kuyinto uvithamini oncibilikayo emanzini. Akugcinwa emzimbeni. Amavithamini ancibilika emanzini ancibilika emanzini. Inani elisele levithamini lishiya umzimba ngomchamo. Umzimba ugcina inqolobane encane yalawa mavithamini. Kufanele zithathwe njalo ukugcina indawo ebekiwe.

I-Niacin isiza uhlelo lokugaya ukudla, isikhumba nezinzwa ukuthi zisebenze. Kubalulekile futhi nokushintsha ukudla kube ngamandla.

I-Niacin (eyaziwa nangokuthi i-vitamin B3) itholakala ku:

• Ubisi
• Amaqanda
• Izinkwa ezicebile nezinhlamvu
• Ilayisi
• Inhlanzi
• Inyama enciphile
• Imidumba
• Amantongomane
• Izinkukhu

ISI-NIACIN NESIFO SENHLIZIYO

Sekuyiminyaka eminingi, imithamo ye-1 kuya ku-3 amagremu we-nicotinic acid ngosuku isetshenziswe njengokwelashwa kwe-cholesterol ephezulu yegazi.

I-Niacin ingasiza ekukhuphuleni izinga le-cholesterol enhle (i-HDL cholesterol) egazini. Kunganciphisa nenani lamafutha angenampilo egazini. Njalo khuluma nomhlinzeki wakho wezokunakekelwa kwempilo ngaphambi kokuqala noma iziphi izithasiselo.

UKUPHELELWA:

Ukushoda kwe-niacin kubanga i-pellagra. Izimpawu zifaka:

• Izinkinga zokugaya ukudla
• Isikhumba esivuthayo
• Ukungasebenzi kahle kwengqondo

UKUTHOLA OKUPHAKATHI:

Iningi le-niacin lingadala:

• Izinga likashukela egazini (glucose) elandisiwe
• Ukulimala kwesibindi
• Izilonda ze-Peptic
• Ukuqhuma kwesikhumba

Uma unikezwa njengokwelashwa kubantu abane-cholesterol ephezulu, izithasiselo ze-niacin zingadala "ukuqhuma." Kungumuzwa wemfudumalo, ububomvu, ukulunywa noma ukuncinza kobuso, intamo, izingalo noma isifuba esingenhla.

Ukuvimbela ukugeleza, ungaphuzi iziphuzo ezishisayo noma utshwala nge-niacin.

Izinhlobo ezintsha zesengezo se-niacin zinemiphumela engemihle. I-Nicotinamide ayibangeli le miphumela emibi.

UKUFAKA IZIKHOMBISI

Izincomo ze-niacin nezinye izakhamzimba zinikezwa ku-Dietary Reference Intakes (ama-DRIs), akhiqizwa yiBhodi Yezokudla Nezokudla e-Institute of Medicine. I-DRI yigama lesethi yamanani ayizethenjwa asetshenziselwa ukuhlela nokuhlola ukutholwa komsoco kwabantu abaphilile. Lawa magugu, ahluka ngokweminyaka nobulili, afaka:

• I-Dietary Allowance Enconyiwe (i-RDA): isilinganiso sansuku zonke sokudla esanele ukuhlangabezana nezidingo zomsoco zabantu abacishe babe yimpilo (97% kuya ku-98%).
• Ukudla okwanele (i-AI): lapho bungekho ubufakazi obanele bokwenza i-RDA, i-AI isethwe ezingeni okucatshangwa ukuthi liqinisekisa ukondleka okwanele.

Ukufakwa Kwereferensi Yezokudla kweNiacin:

Izinsana

• Izinyanga ezi-0 kuye kwezingu-6: 2 * milligrams ngosuku (mg / ngosuku)
• Izinyanga eziyi-7 kuya kwezingu-12: 4 * mg / ngosuku

Ukudla okwanele (AI)

Izingane (RDA)

• Iminyaka eyi-1 kuye kwengu-3: 6 mg / ngosuku
• Iminyaka emi-4 kuya kwengu-8: 8 mg / ngosuku
• Iminyaka eyi-9 kuye kwengu-13: 12 mg / ngosuku

Intsha Nabantu Abadala (RDA)

• Abesilisa abaneminyaka engu-14 nangaphezulu: 16 mg / ngosuku
• Abesifazane abaneminyaka engu-14 nangaphezulu: 14 mg / ngosuku, 18 mg / ngosuku ngesikhathi sokukhulelwa, 17 mg / ngosuku ngesikhathi sokuncelisa

Izincomo ezithile zincike ebudaleni, ocansini, nakwezinye izinto (njengokukhulelwa). Abesifazane abakhulelwe noma abancelisayo badinga amanani aphezulu. Buza umhlinzeki wakho ukuthi yiliphi inani elikulungele kakhulu.

Indlela engcono yokuthola imfuneko yansuku zonke yamavithamini abalulekile ukudla ukudla okulinganiselayo okuqukethe izinhlobo ezahlukene zokudla.

I-Nicotinic acid; Uvithamini B3

• Vitamin B3 inzuzo
• Ukusilela kwe-Vitamin B3
• Umthombo ka-Vitamin B3

UMason JB. Amavithamini, umkhondo wamaminerali, namanye ama-micronutrients. Ku: IGoldman L, iSchafer AI, ama-eds. Imithi yeGoldman-Cecil. Umhla ka-25. IPhiladelphia, PA: Elsevier Saunders; 2016: isahluko 218.

USalwen MJ. Amavithamini nezinto ezilandelwayo. Ku: McPherson RA, Pincus MR, abahleli. UHenry’s Clinical Diagnosis and Management by Laboratory Methods. Umhla ka-23. ISt Louis, MO: Elsevier; 2017: isahluko 26.