Vitamin A - tushen, tasiri akan jiki, tasirin rashi da wuce haddi

Tabbatar da abun ciki

Vitamin A shine sunan gama gari ga mahaɗan kwayoyin halitta da yawa daga rukunin retinoids. Har ila yau, ana kiranta da Retinol, beta-carotene, axophthol da provitamin A. Yana cikin rukuni na bitamin mai-mai narkewa. A cikin tsire-tsire, wannan fili yana tarawa a cikin nau'in carotenoids. A cikin jiki, ana adana bitamin A azaman Retinol a cikin hanta da adipose tissue. Yana daya daga cikin bitamin da aka fara gano a tarihin magani. Da yawa a baya, tun ma kafin gano bitamin A, abubuwan da ke tattare da rashi sun kasance da alama ta tsohuwar Masarawa, Girkawa da Romawa. Cutar ana kiranta makantar dare ko makantar dare kuma maganin ya kunshi cin danye ko dafaffen hantar dabba.

Matsayin bitamin A a cikin jiki

Vitamin A shine mahimmin bitamin da ke da mahimmanci ga aikin jikin mu. Yana taka muhimmiyar rawa a cikin tsarin hangen nesa, yana tasiri girma, kuma yana daidaita ci gaban nama na epithelial da sauran kwayoyin halitta a cikin jiki. Bugu da ƙari, yana da kaddarorin anti-cancer, yana kare epithelium na tsarin numfashi daga microorganisms, yana ƙarfafa tsarin rigakafi, yana hana kamuwa da cuta, yana taimakawa wajen yaki da kwayoyin cuta da ƙwayoyin cuta, yana kula da yanayin fata, gashi da kusoshi, kuma yana shafar lafiyar jiki. dace aiki na cell membranes. Vitamin A yana sake farfado da bushewar fata, don haka yana da kyau a yi amfani da kayan kwaskwarima tare da ƙari, kamar revitalizing Vianek cleansing gel don balagagge da m fata.

Yana daya daga cikin muhimman mahadi masu gina garkuwar jiki. Sabili da haka, yana da daraja ƙara ƙarancin bitamin A a cikin abinci tare da kayan abinci mai gina jiki tare da babban abun ciki na bitamin A, kamar bitamin A 10.000 IU daga Swanson da bitamin A daga Dr. Yakubu.

Vitamin A - Amfanin Lafiya

Vitamin A wani muhimmin sinadari ne da ke amfanar lafiyar ku ta hanyoyi da dama.

Vitamin A ne mai karfi antioxidant

Provitamin A carotenoids kamar beta-carotene, alpha-carotene da beta-cryptoxanthin su ne precursors zuwa bitamin A kuma suna da antioxidant Properties.

Bisa ga sakamakon binciken da aka buga a Pharmacognosy Reviews a cikin 2010, carotenoids suna yaki da free radicals - kwayoyin da ke da tasiri sosai wanda zai iya cutar da jikin mu ta hanyar haifar da damuwa. Danniya na Oxidative yana da alaƙa da cututtuka daban-daban kamar ciwon sukari, ciwon daji, cututtukan zuciya, da raguwar fahimi, bi da bi ya tabbatar da binciken kamar waɗanda aka buga a Magungunan Oxidative da Cellular Longevity a cikin 2017.

Abincin da ke cikin carotenoids yana da alaƙa da ƙananan haɗari ga yawancin waɗannan yanayi, kamar cututtukan zuciya, ciwon huhu, da ciwon sukari.

Dubi kuma: Alpha carotene magani ne mai kyau na rigakafi

Vitamin A yana da mahimmanci ga lafiyar ido kuma yana hana macular degeneration

Vitamin A yana da mahimmanci don kiyaye idanu. Ana buƙatar Vitamin A don canza hasken da ke kaiwa ido zuwa siginar lantarki wanda za'a iya aikawa zuwa kwakwalwa. A haƙiƙa, ɗaya daga cikin alamun farko na rashi bitamin A na iya zama makantar dare, wanda aka sani da makanta na dare.

Makantar dare na faruwa a cikin mutanen da basu da bitamin A, saboda wannan bitamin shine babban sinadari na rhodopsin pigment. Ana samun Rhodopsin a cikin kwayar ido na ido kuma yana da haske sosai. Mutanen da ke da wannan yanayin har yanzu suna gani kullum da rana, amma suna da iyakacin gani a cikin duhu saboda idanunsu suna da wahalar ɗaukar haske a ƙananan matakan.

Kamar yadda wani bincike na shekarar 2015 da aka buga a JAMA Ophthalmology ya tabbatar, baya ga hana makanta da daddare, cin adadin sinadarin beta-carotene na iya taimakawa wajen rage tabarbarewar idanu da wasu ke fuskanta da shekaru.

Macular degeneration (AMD) da ke da alaƙa da shekaru shine babban abin da ke haifar da makanta a ƙasashen da suka ci gaba. Ko da yake ba a san ainihin dalilinsa ba, an yi imanin cewa sakamakon lalacewar salula ne ga retina, wanda aka danganta da damuwa na oxidative (kamar yadda aka tabbatar a cikin binciken 2000 a cikin Binciken Ophthalmology).

Wani bincike na 2001 da aka buga a cikin Archives of Ophthalmology kan cututtukan ido da ke da alaƙa da shekaru ya gano cewa ba wa mutane sama da shekaru 50 tare da lalatawar gani wani ƙarin maganin antioxidant (ciki har da beta-carotene) ya rage haɗarin haɓaka ci gaban macular degeneration da 25%.

Koyaya, wani bita na Cochrane na baya-bayan nan ya gano cewa kariyar beta-carotene kadai ba zai hana ko jinkirta raunin gani da AMD ke haifarwa ba.

Dubi kuma: Innovative far ga marasa lafiya da exudative AMD

Vitamin A na iya karewa daga wasu nau'in ciwon daji

Ciwon daji yana faruwa ne lokacin da ƙwayoyin da ba su da kyau suka fara girma ko rarraba ba tare da kulawa ba.

Tun da bitamin A yana taka muhimmiyar rawa wajen haɓakar ƙwayoyin cuta da haɓakawa, tasirinsa akan haɗarin ciwon daji da rawar da ke cikin rigakafin cutar kansa yana da sha'awar masu bincike.

A cikin nazarin binciken (misali an buga shi a cikin Annals of Hematology a 2017 ko Gynecologic Oncology a 2012), cinye yawancin bitamin A a cikin nau'in beta-carotene yana da alaƙa da rage haɗarin wasu nau'ikan ciwon daji, gami da lymphoma na Hodgkin, da kuma da ciwon daji na mahaifa, huhu da mafitsara.

Duk da haka, yayin da yawan amfani da bitamin A daga abinci na shuka yana da alaƙa da rage haɗarin ciwon daji, abincin dabbobin da ke dauke da nau'o'in bitamin A ba su da alaƙa kamar haka (binciken 2015 da aka buga a cikin Archives of Biochemistry and Biophysics).

Hakazalika, bisa ga binciken 1999 da aka buga a cikin Journal of the National Cancer Institute, bitamin A kari bai nuna irin amfanin amfanin ba.

A gaskiya ma, a wasu nazarin, masu shan taba shan beta-carotene kari sun sami ƙarin haɗarin ciwon huhu (ciki har da binciken da aka buga a Nutrition and Cancer a 2009).

A halin yanzu, dangantakar dake tsakanin matakan bitamin A a cikin jikinmu da haɗarin ciwon daji har yanzu ba a fahimta sosai ba. Duk da haka, bisa ga wani binciken 2015 da aka buga a BioMed Research International, samun isasshen bitamin A, musamman daga tsire-tsire, yana da mahimmanci ga rarrabawar kwayoyin halitta kuma yana iya rage haɗarin wasu nau'in ciwon daji.

Dubi kuma: Maganin da ke rage haɗarin kamuwa da cutar kansar nono. Ana ci gaba da bincike

Vitamin A yana rage haɗarin kuraje

Kurajen fuska cuta ce mai dadewa, mai kumburin fata. Mutanen da ke da wannan yanayin suna samun kumburi mai raɗaɗi da baƙar fata, galibi a fuska, baya, da ƙirji.

Wadannan pimples suna fitowa ne lokacin da glanden sebaceous ya toshe da matattun fata da kitse. Ana samun waɗannan gland a cikin ɗumbin gashin kan fata kuma suna samar da sebum, sinadari mai kakin zuma wanda ke sa fata ta yi ruwa da ruwa.

Kodayake pimples ba su da lahani a jiki, kuraje na iya yin tasiri mai tsanani a kan lafiyar tunanin mutane kuma suna haifar da rashin girman kai, damuwa da damuwa (kamar yadda binciken 2016 da aka buga a Clinical, Cosmetic and Investigation Dermatology alama ya tabbatar). Ba a san ainihin rawar da bitamin A ke takawa wajen haɓakawa da magance kuraje ba.

Wani bincike kamar wanda aka buga a cikin 2015 Journal of Nutrition & Food Sciences ya nuna cewa rashi bitamin A na iya ƙara haɗarin kamuwa da kuraje saboda yana haifar da haɓakar furotin keratin a cikin gashin gashi. Wannan zai ƙara haɗarin kuraje ta hanyar yin wahalar cire matattun ƙwayoyin fata daga ɓawon gashi, wanda ke haifar da toshewar fata.

Wasu magungunan kuraje na bitamin A yanzu ana samun su ta takardar sayan magani.

Isotretinoin misali ɗaya ne na retinoid na baki wanda ke da tasiri wajen magance kuraje masu tsanani. Duk da haka, wannan magani na iya samun mummunar illa kuma dole ne a sha shi kawai a ƙarƙashin kulawar likita.

Dubi kuma: Yadda ake kawar da kuraje?

Vitamin A yana da mahimmanci don haifuwa da ci gaban tayin

Vitamin A yana da mahimmanci don kiyaye tsarin haifuwa mai kyau a cikin maza da mata, da kuma girma da haɓakar embryos a lokacin daukar ciki.

Wani bincike da aka yi a berayen da aka buga a cikin Nutrients a shekara ta 2011 kan mahimmancin bitamin A wajen haifuwa maza ya gano cewa rashi yana toshe ci gaban maniyyi, yana haifar da rashin haihuwa. Wannan binciken da aka ambata ya nuna cewa karancin bitamin A a cikin mata na iya shafar haifuwa ta hanyar rage ingancin kwai da kuma yin tasiri a dasa kwai a cikin mahaifa.

A cikin mata masu juna biyu, bitamin A kuma yana shiga cikin girma da haɓaka da yawa manyan gabobin jiki da tsarin jaririn da ba a haifa ba, ciki har da kwarangwal, tsarin juyayi, zuciya, koda, idanu, huhu, da pancreas.

Duk da haka, ko da yake ba kowa ba ne fiye da rashi na bitamin A, yawan bitamin A yayin daukar ciki yana iya zama cutarwa ga jariri mai tasowa kuma yana iya haifar da lahani na haihuwa (kamar yadda binciken ya tabbatar kamar wadanda aka buga a Archives de Pédiatrie a 1997).

Don haka, hukumomin kiwon lafiya da yawa sun shawarci mata da su guji abincin da ke ɗauke da tarin bitamin A, kamar su pate da hanta, da abubuwan da ke ɗauke da bitamin A yayin da suke da juna biyu.

Dubi kuma: 22q11.2 gogewa ciwo. Lalacewar da aka haifi daya cikin dubu biyu zuwa hudu. yara

Vitamin A yana ƙarfafa tsarin rigakafi

Vitamin A yana tallafawa lafiyar tsarin garkuwar jiki ta hanyar ƙarfafa martanin da ke kare jiki daga cututtuka da kamuwa da cuta. Vitamin A yana da hannu wajen samar da wasu kwayoyin halitta, ciki har da B da T lymphocytes, wanda ke taka muhimmiyar rawa wajen amsawar rigakafi don kare kariya daga cututtuka.

Kamar yadda aka tabbatar a cikin binciken 2012 a cikin Ci gaba na Ƙungiyar Gina Jiki, ƙarancin wannan sinadari yana haifar da ƙara yawan matakan ƙwayoyin ƙwayoyin cuta waɗanda ke raunana amsawa da aiki na tsarin rigakafi.

Vitamin A yana tallafawa lafiyar kashi

Mahimman abubuwan gina jiki da ake buƙata don kula da ƙasusuwa masu lafiya yayin da kuke tsufa sune furotin, calcium, da bitamin D. Duk da haka, cin isasshen bitamin A yana da mahimmanci don haɓaka da haɓakar ƙashi mai kyau, kuma rashi na wannan bitamin yana da alaƙa da rashin lafiyar kashi.

A cewar wani binciken 2017 da aka buga a cikin International Journal of Environmental Research and Public Health, mutanen da ke da ƙananan matakan jini na bitamin A suna iya haifar da raunin kashi fiye da wadanda ke da matakan lafiya. Bugu da kari, wani bincike na baya-bayan nan na binciken lura ya gano cewa wadanda ke da mafi girman adadin bitamin A na abinci suna da kasadar kashi 6% na karaya.

Duk da haka, ƙananan matakan bitamin A bazai zama damuwa kawai ba idan yazo da lafiyar kashi. Wasu nazarin, irin su na 2013 wanda aka buga a cikin Journal of Clinical Densitometry, sun gano cewa mutanen da suke cinye yawancin bitamin A kuma suna da haɗarin karaya.

Duk da haka, duk waɗannan binciken sun dogara ne akan binciken lura wanda ba zai iya tantance dalili da tasiri ba. Wannan yana nufin cewa haɗin kai tsakanin bitamin A da lafiyar kasusuwa a halin yanzu ba a fahimta sosai ba kuma ana buƙatar ƙarin nazarin bincike don tabbatar da abin da aka lura a cikin nazarin kallo.

Ka tuna cewa matsayin bitamin A kadai ba ya ƙayyade haɗarin karaya, kuma tasirin da ake samu akan wasu muhimman abubuwan gina jiki, irin su bitamin D, yana taka rawa.

Dubi kuma: Rage cin abinci bayan karyewar kashi

Kasancewar bitamin A.

Ana iya samun Vitamin A, da sauransu, a cikin man shanu, madara da kayan kiwo, wasu kifaye masu kitse, hanta da dabbar dabba, kwai, dankali mai dadi, Kale, alayyahu da kabewa. Mafi kyawu na carotenoids, daga cikinsu akwai beta carotene mafi mahimmanci, ana samun su a cikin alayyafo, karas, tumatir, barkono ja da latas. 'Ya'yan itãcen marmari waɗanda ke da wadata musamman a cikin carotenoids sune, misali, cherries, apricots, peaches da plums. Samfurin da aka fi amfani da shi don kari kuma ya ƙunshi mafi yawan bitamin A shine man kifi. Gwada, alal misali, Moller's Tran Norwegian Fruit, wanda zaku iya siya ta hanya mai aminci da dacewa a Kasuwar Medonet. Hakanan gwada man kifi Familijny tare da bitamin A da D - Lafiya da rigakafi, ana samun su akan farashin talla.

Yakamata a tuntubi karin bitamin A tare da likitan dangin ku. Yanzu zaku iya yin ziyararku cikin kwanciyar hankali daga gida ta kowace hanya da kuka zaɓa ta hanyar halodoctor.pl.

Hakanan zaka iya kaiwa ga garin masara, wanda kuma shine tushen bitamin A. Ana amfani dashi a madadin garin alkama na gargajiya. Pro Natura garin masara yana samuwa akan Kasuwar Medonet.

Kwayar cututtukan rashin bitamin A

Mutanen da ke aiki a kwamfuta, mata masu ciki da masu shayarwa, jariran da ba su kai ba, masu fama da cutar cystic fibrosis, mashaya da shan taba, da kuma tsofaffi duk suna buƙatar ƙarin bitamin A.

Rashi na bitamin A galibi yana bayyana ta:

1. rashin hangen nesa na dare, ko abin da ake kira "makanta dare" (a cewar WHO, rashi na bitamin A shine babban dalilin rigakafin makanta a cikin yara a duniya),
2. asarar gashi da karyewa,
3. hana girma,
4. fata mai tsinke da kurji
5. bushewa daga cornea da conjunctiva na ido,
6. kasancewar kusoshi masu karyewa kuma sannu a hankali suna girma.
7. ƙara saurin kamuwa da cututtukan ƙwayoyin cuta da ƙwayoyin cuta (rashin bitamin A yana ƙara tsanani da haɗarin mutuwa daga cututtuka kamar kyanda da gudawa),
8. kuraje, eczema,
9. hyperkeratosis,
10. mai saurin kamuwa da gudawa.

Bugu da ƙari, rashi na bitamin A yana ƙara haɗarin anemia da mutuwa a cikin mata masu ciki da mummunan tasiri ga tayin, yana jinkirin girma da ci gaba.

A cikin ganewar asali na raunin bitamin, yana da daraja yin gwajin jini don matakin bitamin da ma'adanai. Ana iya siyan irin wannan gwajin a wuraren kiwon lafiya na Arkmedic masu zaman kansu.

Ana iya samun Vitamin A a cikin abun da ke ciki na GlowMe Health Labs - don ƙishirwa ga fata don annuri - kari na abinci wanda ke tasiri sosai ga fata.

Vitamin A wuce haddi - bayyanar cututtuka

A zamanin yau, muna yawan amfani da abubuwan gina jiki na bitamin, amma dole ne a tuna cewa yawan amfani da bitamin A, saboda yadda yake taruwa a cikin hanta, yana iya zama mai guba ga jiki kuma yana da haɗari ga lafiya (yawan amfani da carotenoids a ciki). Abincin ba shi da alaƙa da guba ko da yake nazarin ya danganta abubuwan da ake amfani da su na beta-carotene zuwa haɗarin ciwon huhu da cututtukan zuciya a cikin masu shan taba). Don haka, ya kamata a sha man kifi sosai bisa ga umarnin likita ko kuma bisa ga takardan magunguna.

Shan bitamin A da yawa zai iya haifar da mummunan sakamako kuma yana iya zama mai mutuwa idan an sha shi da yawa.

Duk da yake yana yiwuwa a cinye yawan adadin bitamin A da aka riga aka tsara daga tushen dabba irin su hanta, yawan guba yana haɗuwa da ƙari mai yawa da magani tare da wasu magunguna irin su isotretinoin. Mummunan guba na bitamin A yana faruwa a cikin ɗan gajeren lokaci lokacin da aka sha kashi ɗaya, mai yawa na bitamin A, yayin da guba na yau da kullun yana faruwa lokacin da aka yi amfani da allurai fiye da sau 10 RDA na tsawon lokaci.

Alamomin wuce gona da iri (hypervitaminosis) sun hada da:

1. hyperactivity da irritability,
2. tashin zuciya, amai
3. hangen nesa,
4. rage cin abinci,
5. hankali ga hasken rana,
6. asarar gashi,
7. bushe fata,
8. jaundice,
9. jinkirta girma,
10. rikicewa,
11. fata mai ƙaiƙayi
12. ciwon kai,
13. ciwon gabobi da tsoka,
14. girman hanta da rashin aikinta,
15. yellowish fata raunuka,
16. rage yawan sinadarin calcium a cikin kasusuwa,
17. lahani na haihuwa a cikin 'ya'yan uwaye da suka fuskanci hypervitaminosis a lokacin daukar ciki.

Ko da yake kasa da na kowa fiye da na kullum bitamin A guba, m bitamin A toxicity yana hade da mafi tsanani bayyanar cututtuka, ciki har da hanta lalacewa, ƙara cranial matsa lamba, har ma da mutuwa.

Bugu da ƙari, ƙwayar bitamin A na iya yin mummunar tasiri ga lafiyar mata da tayin kuma zai iya haifar da lahani na haihuwa.

Don kauce wa guba, ya kamata a guji abubuwan da ake amfani da su na bitamin A. Tun da yawan bitamin A na iya zama cutarwa, ana ba da shawarar ku tuntuɓi likitan ku da farko kafin shan abubuwan da ake buƙata na bitamin A.

Matakan cin abinci na sama don bitamin A ya shafi tushen dabba na bitamin A da kuma abubuwan da ake amfani da su na bitamin A.

Me za a yi idan akwai karancin bitamin A ko wuce haddi?

Idan akwai rashi ko wuce haddi na bitamin A a cikin jiki, ya kamata mu yi la'akari da abincinmu na yau da kullum kuma mu gyara shi ta hanya mai yiwuwa. Idan akwai rashi - ƙara samfurori masu arziki a cikin bitamin A zuwa abinci, da wuce haddi - iyakance amfani da su. Idan an gano abin da ya wuce kima, ya kamata ku rage, kuma a lokuta na musamman ku daina shan bitamin da ke dauke da bitamin A.

Wani lokaci, ko da a cikin yanayin daidaitawar abinci mai kyau, ana samun rashi bitamin A. A irin wannan yanayin, ya kamata a yi la'akari da ƙarin ƙarin. Mafi kyawun bayani, duk da haka, shine tuntuɓi mai cin abinci wanda zai shirya abincin da ya dace kuma ya ba da shawarar matakan da suka dace.

Dubi kuma: Nawa sinadarin bitamin ke cutar da mu?

Vitamin A mai guba da shawarwarin sashi

Kamar yadda rashin bitamin A zai iya yin mummunan tasiri ga lafiyar ku, da yawa kuma yana iya zama haɗari.

Bayar da Shawarwari na yau da kullun (RDA) na bitamin A shine 900 mcg da 700 mcg kowace rana ga maza da mata, bi da bi - wanda ke samuwa cikin sauƙi ta hanyar bin cikakken abinci. Duk da haka, yana da mahimmanci kada a ƙetare Matsayin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarfafa (UL) na 10 IU (000 mcg) ga manya don hana guba.

Duba kuma: Ku ci da hankali

Vitamin A - hulda

Ma'amala mai yiwuwa sun haɗa da:

1. Magungunan rigakafin jini. Yin amfani da baka na bitamin A yayin shan waɗannan magungunan da ake amfani da su don hana ƙumburi na jini na iya ƙara haɗarin zubar jini.
2. Bexarotene (Targretin). Shan abubuwan da ake amfani da su na bitamin A yayin amfani da wannan maganin cutar sankara na kankara yana ƙara haɗarin sakamako masu illa kamar itching, bushewar fata.
3. Hepatotoxic kwayoyi. Shan yawan adadin bitamin A na iya lalata hanta. Haɗa manyan allurai na bitamin A tare da wasu magunguna waɗanda zasu iya cutar da hanta na iya ƙara haɗarin cutar hanta.
4. Orlistat (Alli, Xenical). Wannan miyagun ƙwayoyi na asarar nauyi na iya rage sha na bitamin A daga abinci. Likitanku na iya ba da shawarar shan multivitamin tare da bitamin A da beta-carotene yayin da kuke shan wannan magani.
5. Retinoids. Kada a yi amfani da kari na bitamin A da waɗannan magungunan baka na sayan magani a lokaci guda. Wannan na iya ƙara haɗarin yawan matakan bitamin A a cikin jini.