{"id":90651,"date":"2026-11-08T19:00:00","date_gmt":"2026-11-08T16:00:00","guid":{"rendered":"https:\/\/www.indir.com\/haber\/?p=90651"},"modified":"2026-11-06T14:55:00","modified_gmt":"2026-11-06T11:55:00","slug":"kahvenin-etkisi-kac-saat-surer","status":"publish","type":"post","link":"https:\/\/www.indir.com\/haber\/kahvenin-etkisi-kac-saat-surer\/","title":{"rendered":"Kahvenin Etkisi Ka\u00e7 Saat S\u00fcrer? Uykuyu Nas\u0131l Etkiler?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u00d6\u011fleden sonra i\u00e7ilen bir kahve &#8220;beni etkilemez&#8221; diye d\u00fc\u015f\u00fcn\u00fcl\u00fcr. Uykuya da gayet rahat dal\u0131n\u0131r. Ancak ara\u015ft\u0131rmalar, kahvenin etkisi ge\u00e7ti sand\u0131\u011f\u0131m\u0131z saatlerde bile kafeinin v\u00fccutta kald\u0131\u011f\u0131n\u0131 ve uykunun kalitesini sessizce d\u00fc\u015f\u00fcrd\u00fc\u011f\u00fcn\u00fc g\u00f6steriyor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kafein v\u00fccutta nas\u0131l \u00e7al\u0131\u015f\u0131r?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">G\u00fcn boyunca beyinde adenozin adl\u0131 bir molek\u00fcl birikir. Adenozin artt\u0131k\u00e7a yorgunluk hissi artar ve uyku derinle\u015fir. Kafein, adenozine benzedi\u011fi i\u00e7in beyindeki ayn\u0131 al\u0131c\u0131lara yerle\u015fir ama onlar\u0131 \u00e7al\u0131\u015ft\u0131rmaz. Kilide uyan ama kap\u0131y\u0131 a\u00e7mayan bir anahtar gibi yorgunluk sinyalini bast\u0131r\u0131r. Kafein i\u00e7ildikten sonra yakla\u015f\u0131k 30 ila 60 dakika i\u00e7inde kandaki en y\u00fcksek seviyeye ula\u015f\u0131r. Uyan\u0131kl\u0131k hissinin h\u0131zl\u0131 gelmesinin sebebi budur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kahvenin etkisi ka\u00e7 saat s\u00fcrer?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Burada \u00f6nemli kavram yar\u0131lanma \u00f6mr\u00fc, yani v\u00fccudun kafeinin yar\u0131s\u0131n\u0131 temizlemesi i\u00e7in ge\u00e7en s\u00fcre. Sa\u011fl\u0131kl\u0131 bir yeti\u015fkinde bu s\u00fcre ortalama 5 saat civar\u0131nda. Ancak ki\u015fiden ki\u015fiye 1,5 ile 9,5 saat aras\u0131nda de\u011fi\u015febiliyor. Basit bir hesapla, saat 15.00&#8217;te i\u00e7ilen bir kahvenin kafeininin yakla\u015f\u0131k y\u00fczde 29&#8217;u gece yar\u0131s\u0131 h\u00e2l\u00e2 kanda dola\u015f\u0131yor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Yani hissetti\u011finiz uyan\u0131kl\u0131k birka\u00e7 saat i\u00e7inde azalsa da kahvenin etkisi v\u00fccutta \u00e7ok daha uzun s\u00fcr\u00fcyor. Kafeinin v\u00fccuttan b\u00fcy\u00fck \u00f6l\u00e7\u00fcde at\u0131lmas\u0131 i\u00e7in yakla\u015f\u0131k be\u015f yar\u0131lanma \u00f6mr\u00fc, yani ortalama 25 saat gerekiyor.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.indir.com\/haber\/wp-content\/uploads\/2026\/11\/aksam-kahve-fincan.webp\" alt=\"Kahvenin etkisi uykuyu bozar: gece lambas\u0131 alt\u0131nda kahve fincan\u0131\" class=\"wp-image-90644\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Yatmadan 6 saat \u00f6nceki kahve bile uykuyu bozuyor<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Amerikan Uyku T\u0131bb\u0131 Akademisi&#8217;nin (AASM) dergisinde yay\u0131mlanan 2013 tarihli bir \u00e7al\u0131\u015fmada kat\u0131l\u0131mc\u0131lara yatmadan hemen \u00f6nce, 3 saat \u00f6nce ve 6 saat \u00f6nce 400 miligram kafein verildi. Bu miktar yakla\u015f\u0131k 2-3 fincan kahveye denk geliyor. Sonu\u00e7lar dikkat \u00e7ekiciydi: Yatmadan 6 saat \u00f6nce al\u0131nan kafein bile \u00f6l\u00e7\u00fclen toplam uyku s\u00fcresini bir saatten fazla k\u0131saltt\u0131. \u00dcstelik kat\u0131l\u0131mc\u0131lar\u0131n \u00e7o\u011fu bu kayb\u0131 fark etmedi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2023&#8217;te 24 \u00e7al\u0131\u015fmay\u0131 bir araya getiren bir analiz de standart bir fincan kahvenin yatmadan en az 8,8 saat \u00f6nce bitirilmesi gerekti\u011fini hesaplad\u0131. Gece 23.00&#8217;te yatan biri i\u00e7in bu, son kahvenin \u00f6\u011fleden sonra saat 2 civar\u0131nda i\u00e7ilmesi anlam\u0131na geliyor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kahvenin etkisini de\u011fi\u015ftiren fakt\u00f6rler<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kafeinin v\u00fccutta ne kadar kalaca\u011f\u0131n\u0131 birka\u00e7 etken belirliyor:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Genetik: Karaci\u011ferde kafeini par\u00e7alayan enzimin aktifli\u011fi ki\u015fiden ki\u015fiye de\u011fi\u015fir,<\/li>\n\n<li>Sigara: Kafeinin at\u0131lmas\u0131n\u0131 yakla\u015f\u0131k iki kat h\u0131zland\u0131r\u0131r,<\/li>\n\n<li>Hamilelik ve \u00f6strojen i\u00e7eren do\u011fum kontrol haplar\u0131: At\u0131l\u0131m\u0131 belirgin \u015fekilde yava\u015flat\u0131r,<\/li>\n\n<li>Baz\u0131 ila\u00e7lar ve karaci\u011fer hastal\u0131klar\u0131: S\u00fcreyi uzatabilir.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Sa\u011fl\u0131kl\u0131 yeti\u015fkinler i\u00e7in genel kabul g\u00f6ren g\u00fcnl\u00fck \u00fcst s\u0131n\u0131r yakla\u015f\u0131k 400 miligram, hamileler i\u00e7in ise 200 miligram. Unutmay\u0131n; \u00e7ay, kola ve enerji i\u00e7ecekleri de kafein i\u00e7erir. Kafein ve uykuyla ilgili sorunlar\u0131n\u0131z s\u00fcr\u00fcyorsa bir hekime dan\u0131\u015fmak en do\u011frusu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">G\u00fcndelik al\u0131\u015fkanl\u0131klar\u0131n v\u00fccuda etkisini merak ediyorsan\u0131z <a href=\"https:\/\/www.indir.com\/haber\/telefona-egilmek-boyuna-kac-kilo-yuk-bindirir\/\">telefona e\u011filmenin boyuna ka\u00e7 kilo y\u00fck bindirdi\u011fini<\/a> ve <a href=\"https:\/\/www.indir.com\/haber\/gunde-10-bin-adim-kurali-nereden-cikti\/\">g\u00fcnde 10 bin ad\u0131m kural\u0131n\u0131n nereden \u00e7\u0131kt\u0131\u011f\u0131n\u0131<\/a> anlatt\u0131\u011f\u0131m\u0131z yaz\u0131lara da g\u00f6z atabilirsiniz. \u00c7al\u0131\u015fman\u0131n ayr\u0131nt\u0131lar\u0131 <a href=\"https:\/\/aasm.org\/late-afternoon-and-early-evening-caffeine-can-disrupt-sleep-at-night\/\" target=\"_blank\" rel=\"noopener\">AASM&#8217;nin resmi a\u00e7\u0131klamas\u0131nda<\/a> yer al\u0131yor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">S\u0131k\u00e7a Sorulan Sorular<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Kahvenin etkisi ka\u00e7 saatte ge\u00e7er?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hissedilen uyan\u0131kl\u0131k 3-5 saat i\u00e7inde azal\u0131r. Ancak kafeinin yar\u0131lanma \u00f6mr\u00fc ortalama 5 saattir ve v\u00fccuttan b\u00fcy\u00fck \u00f6l\u00e7\u00fcde at\u0131lmas\u0131 yakla\u015f\u0131k bir g\u00fcn s\u00fcrebilir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ak\u015fam kahve i\u00e7mek uykuyu bozar m\u0131?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Evet. Ara\u015ft\u0131rmalar, yatmadan 6 saat \u00f6nce al\u0131nan kafeinin bile toplam uyku s\u00fcresini bir saatten fazla k\u0131saltabildi\u011fini g\u00f6steriyor.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Son kahve saat ka\u00e7ta i\u00e7ilmeli?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Genel \u00f6neri, standart bir fincan kahveyi yatmadan en az 8-9 saat \u00f6nce i\u00e7mek. Gece 23.00&#8217;te yatan biri i\u00e7in bu, \u00f6\u011fleden sonra saat 2 civar\u0131na denk geliyor.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00d6\u011fleden sonra i\u00e7ilen bir kahve &#8220;beni etkilemez&#8221; diye d\u00fc\u015f\u00fcn\u00fcl\u00fcr. Uykuya da gayet rahat dal\u0131n\u0131r. Ancak ara\u015ft\u0131rmalar, kahvenin etkisi ge\u00e7ti sand\u0131\u011f\u0131m\u0131z saatlerde bile kafeinin v\u00fccutta kald\u0131\u011f\u0131n\u0131 ve uykunun kalitesini sessizce d\u00fc\u015f\u00fcrd\u00fc\u011f\u00fcn\u00fc g\u00f6steriyor. Kafein v\u00fccutta nas\u0131l \u00e7al\u0131\u015f\u0131r? G\u00fcn boyunca beyinde adenozin adl\u0131 bir molek\u00fcl birikir. Adenozin artt\u0131k\u00e7a yorgunluk hissi artar ve uyku derinle\u015fir. Kafein, adenozine benzedi\u011fi i\u00e7in [&hellip;]<\/p>\n","protected":false},"author":100,"featured_media":90643,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-90651","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji"],"_links":{"self":[{"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/posts\/90651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/users\/100"}],"replies":[{"embeddable":true,"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/comments?post=90651"}],"version-history":[{"count":1,"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/posts\/90651\/revisions"}],"predecessor-version":[{"id":90657,"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/posts\/90651\/revisions\/90657"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/media\/90643"}],"wp:attachment":[{"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/media?parent=90651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/categories?post=90651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.indir.com\/haber\/wp-json\/wp\/v2\/tags?post=90651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}