Niacin

Niacin, cyangwa vitamine B3, ni imwe mu ngirakamaro B-igoye ya V-vitamine ikenera umubiri umubiri ukeneye guhindura ibiryo imbaraga. Vitamine zose hamwe nu myunyu ngugu ni ingenzi ku buzima bwiza, ariko niacin ni nziza cyane kuri sisitemu y'imitsi n'igifu. Reka dufate ubushakashatsi bwimbitse kugirango twumve neza inyungu za niacin n'ingaruka zayo.

Niacin isanzwe iboneka mubiribwa byinshi kandi iraboneka muburyo bwinyongera no kwandikirwa, biroroshye rero kubona niacin ihagije no gusarura ibyiza byubuzima. Uturemangingo two mu mubiri duhindura niacin mo coenzyme ikoreshwa yitwa nicotinamide adenine dinucleotide (NAD), ikoreshwa na enzymes zirenga 400 mumubiri kugirango ikore imirimo yingenzi.

Nubwo kubura niacin bidasanzwe mubantu bo muri Amerika, birashobora gukomera bikanatera indwara ya sisitemu yitwa pellagra. Indwara zoroheje za pellagra zirashobora gutera impiswi na dermatite, mugihe indwara zikomeye zishobora gutera guta umutwe ndetse zikanica.

Pellagra ikunze kugaragara mubantu bakuru bafite hagati yimyaka 20 na 50, ariko birashobora kwirindwa ukoresheje amafaranga asabwa yo kurya (RDA) ya niacin. Umuntu mukuru RDA kuri niacin ni 14 kugeza 16 mg kumunsi. Niacin iboneka byoroshye mubiribwa nk'amafi, inkoko, inyama z'inka, turukiya, imbuto, n'imboga. Niacin irashobora kandi gukorwa mumubiri uhereye kuri amino acide tryptophan. Iyi aside amine iboneka mu biribwa nk'inkoko, inkeri, imbuto, imbuto, n'ibicuruzwa bya soya.

Niacin nayo iri muri multivitamine nyinshi zirenze urugero. Byombi Kamere Yakozwe na Centrum ikuze ya multivitamine irimo mg 20 za niacin kuri tablet, ni hafi 125% ya RDA ikuze. Acide Nikotinike na nicotinamide nuburyo bubiri bwinyongera ya niacin. Kurenza kuri konte yinyongera ya niacin iraboneka mumbaraga zitandukanye (50 mg, 100 mg, 250 mg, 500 mg) zisumba RDA. Imiterere ya niacin ikubiyemo amazina yikirango nka Niaspan (yaguwe-kurekura) na Niacor (guhita-kurekura) kandi iraboneka mumbaraga zingana na mg 1.000. Niacin irashobora kuboneka muburyo bwagutse-kurekura kugirango igabanye ingaruka zimwe.

Rimwe na rimwe niacin yandikirwa hamwe n'imiti igabanya cholesterol nka statine kugirango ifashe urwego rwamaraso rwa lipide.

Ibindi bimenyetso byerekana ko niacin ari nziza kubantu bafite ibyago byinshi byo kwandura indwara z'umutima n'indwara z'umutima kuko ntabwo igabanya cholesterol ya LDL gusa ahubwo na triglyceride. Niacin irashobora kugabanya urugero rwa triglyceride kuri 20% kugeza kuri 50%.