Kuunikira Kopanda Magazi Pansi pa Kufufuza Kwambiri
Ngakhale kuwonjezeka kwadzidzidzi za chitetezo cha dzuwa kwachititsa kuti ambiri asatuluke mabedi , chilakolako chofikira kuwala kwa mkuwa kamakabebe. Pofuna kuthana ndi chosowachi, amalonda akuyamba kupeza ndalama pogwiritsa ntchito njira zowonongeka zopanda dzuwa.
Zina mwa izo ndi mapiritsi ophika malonda omwe amalonjeza kuti adzakupatsani kuwala kwabwinobwino popanda ngozi kapena kuwala kwa dzuwa (ultraviolet) .
Momwe Mapiritsi Owotchera Amagwirira Ntchito
Muzochitika zachilendo, timapeza tani pamene maselo a khungu amawonekera ku dzuwa. Thupi limayankha mwa kukankha melanin yambiri mu maselo amenewa, kuwapangitsa kukhala mdima. Izi sizikutipangitsa kuti tisowetse dzuwa, zimateteza khungu lathu ndi thupi lathu kuwonongeka kwa dzuwa.
Mankhwala odzola samagwira ntchito motere. Ambiri ali ndi chogwiritsidwa ntchito chotchedwa canthaxanthin, chowonjezera cha carotene chomwe chimagwiritsidwa ntchito ngati zakudya mu zakudya zambiri. Sizimasintha mafinya a thupi lathu koma amakhala m'malo osiyana siyana a thupi, kuphatikizapo khungu.
Zotsatira zimasiyanasiyana kuchokera kwa munthu wina ndi zina zomwe zimapindula ndi hule wobiriwira bwino pamene ena amawoneka ngati a orange-ish kapena a chikasu.
Chitetezo Chodzizira Piritsi Powonongeka
Ngakhale kuti canthaxanthin imavomerezedwa kuti igwiritsidwe ntchito ndi US Food and Drug Administration (FDA) ngati zakudya zokhala ndi zakudya, sizinavomerezedwe kuti zigwiritsidwe ntchito monga chithandizo chopanda dzuwa chopanda dzuwa.
Mapiritsi odzola amadziwika kuti ali ndi kuchuluka kwa canthaxanthin. Kaya masitepewo ali otetezeka sanakhazikitsidwe.
Ndizinenedwa kuti, a FDA adalandira malipoti okhudza zotsatira zosiyanasiyana, makamaka makamaka kuchokera ku kampani yomwe inasiya ntchitoyo pambuyo poti munthu wogwira ntchito akusowa masomphenya chifukwa cha mapangidwe a makristina mu retina yake (chikhalidwe chomwe chimatchedwa canthaxanthin- zovuta zowonjezera).
Ena afotokozera ogwiritsa ntchito omwe anali ndi msomali, kupunduka, kutsegula m'mimba, kuyabwa kwambiri, ndi kutsekemera atatha kumwa mapiritsi. Khungu kuvulaza ndi kuwonongeka kwa chiwindi kwatchulidwanso.
Kuphatikiza pa mapiritsi a khungu, pali zinthu zambiri zomwe zimagulidwa ngati ziwombankhanga zomwe zimayambitsa kuyambitsa khungu. Mavitamini kapena ma mapiritsi amapezeka, amakhala ndi amino acid wotchedwa tyrosine omwe ndi ofunika kwambiri m'thupi lomwe limapanga melanin.
Apanso, mankhwalawa sanalandire chivomerezo cha FDA, ndipo umboni wambiri umasonyeza kuti iwo sagwira ntchito ndipo akhoza kukhala owopsa.
Njira Zowonongeka Zosafunika
Kwa iwo amene amafuna tani koma m'malo mwake sangaike pangozi zotsatira za kuwala kwa UV, pali zinthu zambiri zomwe zalandira mgwirizano wa FDA monga njira zopanda dzuwa:
- Bronzers amasankhidwa ndi FDA monga zodzoladzola zomwe zimayesedwa kuti ziwononge dzuwa. Zosakaniza zimaphatikizapo zowonjezeretsa mtundu wa zowonjezera ndipo zimasowa kupatula sopo ndi madzi kuchotsa.
- Kutambasula, nsalu zopanda dzuwa, ndi nsalu zozizira ndizopangidwa ndi mapuloteni omwe amapanga khungu kuti apange mdima wandiweyani. Mofanana ndi nsalu yachibadwa, mtunduwo umatha pang'onopang'ono patatha masiku angapo. Chogwiritsiridwa ntchito kwa mankhwalawa ndi dihydroxyacetone (DHA), chokhachokhadikhadirate chomwe chimachokera ku shuga ndi shuga.
> Zotsatira:
> American Cancer Society. "Mapiritsi Odzola ndi Zojambula Zina." Atlanta, Georgia; zasinthidwa pa March 19, 2017.
> US Food and Drug Administration (FDA). "Zowonjezera Zamalonda: Mapiritsi Opaka Mafuta." Silver Spring, Maryland; zasinthidwa pa January 12, 2005.