{"id":413,"date":"2020-04-09T18:20:21","date_gmt":"2020-04-09T22:20:21","guid":{"rendered":"https:\/\/www.digitalnutrients.com\/?p=413"},"modified":"2025-10-30T22:28:35","modified_gmt":"2025-10-31T02:28:35","slug":"what-are-the-benefits-of-vitamin-a","status":"publish","type":"post","link":"https:\/\/www.digitalnutrients.com\/tr\/what-are-the-benefits-of-vitamin-a\/","title":{"rendered":"A vitamininin faydalar\u0131 nelerdir?"},"content":{"rendered":"
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

A vitamini nedir?<\/em><\/h1>

A vitamini, insan sa\u011fl\u0131\u011f\u0131 i\u00e7in son derece \u00f6nemli olan ya\u011fda \u00e7\u00f6z\u00fcnen bile\u015fikler grubunun di\u011fer ad\u0131d\u0131r. A vitamini ya\u011fda \u00e7\u00f6z\u00fcnd\u00fc\u011f\u00fc i\u00e7in, daha sonra kullan\u0131lmak \u00fczere v\u00fccut dokular\u0131nda depolan\u0131r. V\u00fccudunuzdaki A vitamininin \u00e7o\u011fu, karaci\u011ferinizde retinil esterleri \u015feklinde saklan\u0131r. Bu esterler daha sonra all-trans-retinol'e par\u00e7alan\u0131r ve bu da retinol ba\u011flay\u0131c\u0131 proteine (RBP) ba\u011flan\u0131r. Ard\u0131ndan kan dola\u015f\u0131m\u0131n\u0131za girer ve v\u00fccudunuz taraf\u0131ndan kullan\u0131labilir. Sa\u011fl\u0131kl\u0131 g\u00f6rmeyi korumak, ba\u011f\u0131\u015f\u0131kl\u0131k sisteminizin ve organlar\u0131n\u0131z\u0131n normal i\u015flevini sa\u011flamak ve anne karn\u0131ndaki bebeklerin do\u011fru b\u00fcy\u00fcme ve geli\u015fmesine yard\u0131mc\u0131 olmak da dahil olmak \u00fczere v\u00fccudunuzdaki bir\u00e7ok s\u00fcre\u00e7 i\u00e7in gereklidirler.<\/p>

A vitamini bile\u015fikleri hem hayvansal hem de bitkisel g\u0131dalarda bulunur ve iki farkl\u0131 formda gelir: \u00f6nceden olu\u015fturulmu\u015f A vitamini ve provitamin A. \u00d6nceden olu\u015fturulmu\u015f A vitamini, v\u00fccudunuzun oldu\u011fu gibi kullanabilece\u011fi vitaminin aktif formu olarak bilinir. Et, tavuk, bal\u0131k ve s\u00fct \u00fcr\u00fcnleri de dahil olmak \u00fczere hayvansal \u00fcr\u00fcnlerde bulunur ve retinol, retinal ve retinoik asit bile\u015fiklerini i\u00e7erir. Provitamin A karotenoidleri (alfa-karoten, beta-karoten ve beta-kriptoksantin), bitkilerde bulunan vitaminin inaktif formudur. Bu bile\u015fikler v\u00fccudunuzda aktif forma d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr. \u00d6rne\u011fin, beta-karoten ince ba\u011f\u0131rsakta retinole d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr.<\/p>

A vitamininin faydalar\u0131 nelerdir?<\/em><\/h1>

1. G\u00f6z sa\u011fl\u0131\u011f\u0131n\u0131z\u0131 korur, gece k\u00f6rl\u00fc\u011f\u00fcn\u00fc ve ya\u015fa ba\u011fl\u0131 g\u00f6rme kayb\u0131n\u0131 \u00f6nler!<\/h2>

A vitamini, g\u00f6rme yetinizi korumak i\u00e7in gereklidir. Bu vitamin, g\u00f6z\u00fcn\u00fcze \u00e7arpan \u0131\u015f\u0131\u011f\u0131 beyninize g\u00f6nderilebilecek elektriksel bir sinyale d\u00f6n\u00fc\u015ft\u00fcrmek i\u00e7in gereklidir. Asl\u0131nda, A vitamini eksikli\u011finin ilk belirtilerinden biri, niktalopi olarak bilinen gece k\u00f6rl\u00fc\u011f\u00fcd\u00fcr. Gece k\u00f6rl\u00fc\u011f\u00fc, A vitamini eksikli\u011fi olan ki\u015filerde g\u00f6r\u00fcl\u00fcr, \u00e7\u00fcnk\u00fc vitamin, rodopsin pigmentinin \u00f6nemli bir bile\u015fenidir. Rodopsin, g\u00f6z\u00fcn\u00fcz\u00fcn retinas\u0131nda bulunur ve \u0131\u015f\u0131\u011fa kar\u015f\u0131 son derece hassast\u0131r. Bu duruma sahip ki\u015filer g\u00fcnd\u00fcz normal \u015fekilde g\u00f6rebilirler, ancak g\u00f6zleri d\u00fc\u015f\u00fck \u0131\u015f\u0131k seviyelerini alg\u0131lamakta zorland\u0131\u011f\u0131 i\u00e7in karanl\u0131kta g\u00f6rme yetileri azal\u0131r. Gece k\u00f6rl\u00fc\u011f\u00fcn\u00fc \u00f6nlemenin yan\u0131 s\u0131ra, yeterli miktarda beta-karoten t\u00fcketmek, baz\u0131 ki\u015filerin ya\u015fland\u0131k\u00e7a ya\u015fad\u0131\u011f\u0131 g\u00f6rme kayb\u0131n\u0131 yava\u015flatmaya yard\u0131mc\u0131 olabilir. Ya\u015fa ba\u011fl\u0131 makula dejenerasyonu (AMD), geli\u015fmi\u015f d\u00fcnyada k\u00f6rl\u00fc\u011f\u00fcn \u00f6nde gelen nedenidir. Kesin nedeni bilinmemekle birlikte, oksidatif strese ba\u011fl\u0131 olarak retinada meydana gelen h\u00fccresel hasar\u0131n sonucu oldu\u011fu d\u00fc\u015f\u00fcn\u00fclmektedir.<\/p>

2. \u00c7e\u015fitli Kanser T\u00fcrlerine Yakalanma Riskinizi Azaltabilir<\/h2>

Kanser, anormal h\u00fccrelerin kontrols\u00fcz bir \u015fekilde b\u00fcy\u00fcmeye veya b\u00f6l\u00fcnmeye ba\u015flamas\u0131yla ortaya \u00e7\u0131kar. A vitamini h\u00fccrelerinizin b\u00fcy\u00fcmesinde ve geli\u015fmesinde \u00f6nemli bir rol oynad\u0131\u011f\u0131ndan, kanser riski \u00fczerindeki etkisi ve kanser \u00f6nlemedeki rol\u00fc bilim insanlar\u0131n\u0131n ilgisini \u00e7ekmektedir. G\u00f6zlemsel \u00e7al\u0131\u015fmalarda, beta-karoten formunda daha y\u00fcksek miktarda A vitamini t\u00fcketiminin, Hodgkin lenfomas\u0131, rahim a\u011fz\u0131, akci\u011fer ve mesane kanseri de dahil olmak \u00fczere baz\u0131 kanser t\u00fcrlerinin riskinde azalmayla ba\u011flant\u0131l\u0131 oldu\u011fu bulunmu\u015ftur.<\/p>

Bununla birlikte, bitkisel g\u0131dalardan al\u0131nan y\u00fcksek miktarda A vitamininin kanser riskinin azalmas\u0131yla ili\u015fkilendirildi\u011fi g\u00f6r\u00fclse de, aktif A vitamini formlar\u0131 i\u00e7eren hayvansal g\u0131dalar ayn\u0131 \u015fekilde ili\u015fkilendirilmemektedir (14Trusted Source, 15Trusted Source).<\/p>

Benzer \u015fekilde, A vitamini takviyelerinin de ayn\u0131 faydal\u0131 etkileri g\u00f6stermedi\u011fi g\u00f6r\u00fclm\u00fc\u015ft\u00fcr (16Trusted Source).<\/p>

Hatta baz\u0131 \u00e7al\u0131\u015fmalarda, beta-karoten takviyesi alan sigara i\u00e7enlerde akci\u011fer kanseri riskinin artt\u0131\u011f\u0131 g\u00f6zlemlenmi\u015ftir (17Trusted Source, 18Trusted Source, 19Trusted Source).<\/p>

\u015eu an itibariyle, v\u00fccudunuzdaki A vitamini seviyeleri ile kanser riski aras\u0131ndaki ili\u015fki hen\u00fcz tam olarak anla\u015f\u0131lamam\u0131\u015ft\u0131r.<\/p>

Yine de, mevcut kan\u0131tlar, \u00f6zellikle bitkilerden al\u0131nan yeterli miktarda A vitamininin sa\u011fl\u0131kl\u0131 h\u00fccre b\u00f6l\u00fcnmesi i\u00e7in \u00f6nemli oldu\u011funu ve baz\u0131 kanser t\u00fcrlerine yakalanma riskini azaltabilece\u011fini g\u00f6stermektedir.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

What is Vitamin A? Vitamin A is another name for a group of fat-soluble compounds highly important for human health.\u00a0 Since vitamin A is fat soluble, it\u2019s stored in body tissue for later use.\u00a0 Most of the vitamin A in your body is kept in your liver in the form of retinyl esters.\u00a0 These esters […]<\/p>\n","protected":false},"author":1,"featured_media":412,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","omw_enable_modal_window":"enable","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[23,20,78,81],"tags":[28,100,27,101,99,102,83],"class_list":["post-413","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blood-flow","category-detox","category-health-fitness","category-vitamins","tag-blood-flow","tag-deficiency","tag-detox","tag-food-sources","tag-micronutrients","tag-supplementation","tag-vitamins","entry","has-media","owp-thumbs-layout-horizontal","owp-btn-big","owp-tabs-layout-vertical","has-no-thumbnails","has-product-nav"],"_links":{"self":[{"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/posts\/413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/comments?post=413"}],"version-history":[{"count":8,"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/posts\/413\/revisions"}],"predecessor-version":[{"id":1844,"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/posts\/413\/revisions\/1844"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/media\/412"}],"wp:attachment":[{"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/media?parent=413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/categories?post=413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.digitalnutrients.com\/tr\/wp-json\/wp\/v2\/tags?post=413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}