Kuva ku bikoresho byo kwita ku ruhu byo mu rugo kugeza ku kuvura uruhu rw’inzobere mu ma salon, kuva ku kurwanya gusaza no kuvura ibiheri kugeza ku gusana uruhu rworoshye, bisa nkaho bitanga igisubizo kuri buri kintu cyose gikenewe mu kwita ku ruhu. Mu by’ukuri, byahindutse ingingo ikunzwe cyane ku buryo ubu irimo kuvugwaho cyane ku mbuga nkoranyambaga. Ariko se ni iki gituma uru rumuri rutukura rusa n’aho rufite imbaraga zose rukundwa mu kwita ku ruhu?
01.
Itara ritukura ni iki?
Umucyo uturuka ku zuba. Ariko izuba si ibara rimwe gusa. Rishobora kugabanywamo amabara arindwi y'urumuri dushobora kubona: umutuku, umuhondo, umuhondo, icyatsi kibisi, ubururu, indigo na violet. Itandukaniro riri mu miterere y'uburebure bwazo - uko uburebure bw'uburebure burushaho kuba bwinshi, niko ibara ry'umutuku rirushaho kuba rigufi; uko uburebure bw'uburebure burushaho kuba bugufi, niko ibara ry'umutuku rirushaho kuba rinini. Umucyo utukura uboneka ku mpera ndende y'urumuri rugaragara, rufite uburebure bw'uburebure buri hagati ya 630nm na 780nm. Iki ni igabanywa risanzwe muri spectrum ya electromagnetic.
Umucyo utukura ufite uburebure bw'uburebure bw'urumuri. Ibi bivuze ko ushobora kwinjira mu ruhu utibagiwe cyane n'uturemangingo tw'umubiri. Porofeseri Michael Hamblin wo mu Ishuri ry'Ubuganga rya Harvard yasanze urumuri rutukura rushobora kugera kuri mm 30 cyangwa zirenga mu turemangingo tw'umuntu. Ibi bituma urumuri rutukura ruhinduka amahitamo meza yo kuvura ubwiza, kuvugurura ubuzima, ndetse no mu buvuzi.
02.
Uburyo bwo kwita ku ruhu rw'umutuku VS uburyo gakondo
Byongeye kandi, agaciro kadasanzwe ko kwita ku ruhu rw'urumuri rutukura karushaho kugaragara iyo ugereranije n'uburyo gakondo. Uburyo gakondo bwo kwita ku ruhu bukurikiza cyane cyane uburyo bwo 'kunyura hanze', akenshi busaba ko habaho ibikorwa byo hanze hakoreshejwe 'ibinyabutabire'.
Umucyo utukura, ubwawo, ni ubwoko bw'ingufu zifatika. Ntabwo wongera ibintu ku ruhu mu buryo butaziguye, ahubwo ukoresha imbaraga n'ubuhanga bw'uturemangingo imbere mu mubiri, binyuze mu kohereza ibimenyetso by'ingufu byihariye ku turemangingo. Iyi nzira izwi nka “photobiological regulation”.
Iyo urumuri rutukura rwinjiye muri dermis, rwibasira neza mitochondria iri mu turemangingo. Iyo mitochondria imaze kwinjiza ingufu z'urumuri, yongera cyane imikorere ya ATP, bigatera urukurikirane rw'ibikorwa bya biochemical: kwihutisha ikorwa rya collagen na elastin, kongera imikorere y'uturemangingo, kwihutisha gukuraho uturemangingo tw’ubusa n’imyanda, no kugenzura uburyo uturemangingo twibasira. Izi ngaruka zihuza uruhu zigira akamaro kenshi, harimo kurwanya gusaza, gusana, kurwanya ubushyuhe, no kongera urumuri, byose byemejwe n'ubushakashatsi bwinshi bwa muganga.
03.
Amerika ni yo yatangije ubuvuzi bw'uruhu bw'umubiri wose bukoresha ibara ry'umutuku.
Ikigo cya Amerika (Merican) kimaze imyaka 17 cyitabira cyane ibijyanye n'ubuzima bw'amaso n'ubwiza. Gishingiye ku bushakashatsi bwimbitse ku bijyanye n'ingufu n'imiterere y'urumuri rutukura, cyageze ku buvuzi buhuriweho bwo kuvura isura n'umubiri binyuze mu kugenzura neza ubukana bw'uburebure bw'urumuri rutukura n'ingufu rutanga, hamwe n'imiterere y'imiterere y'urumuri n'uburyo bwo kugenzura urumuri, kugira ngo inyungu z'urumuri rutukura mu kwita ku ruhu zishobore kuva mu maso kugera ku mubiri.
Ni ngombwa kuvuga ko udushya twa Merican turenze kure isoko imwe y'urumuri. Ishobora kandi guhuza mu buryo bwa siyansi uburebure bw'urumuri bwinshi kandi busobanutse neza kugira ngo igere ku ngaruka zihuriweho, bityo igatanga igisubizo cyiza kandi cyuzuye cy'ubuzima bw'amaso n'ubwiza ku bibazo by'uruhu bingana.
Ubwiza bw'uruhu bw'umutuku butuma uruhu rugira imbaraga imbere mu mubiri. Imiterere yabwo itekanye, ikora neza kandi ntirugire ingaruka mbi ku ruhu ituma ruhinduka amahitamo yizewe ku bakunzi b'ubwiza. Inzu nziza z'urumuri rw'umutuku ku mubiri wose, igatanga igice gishya mu gushaka ubuzima bwiza n'ubwiza.