\u010cL\u00c1NOK POKRA\u010cUJE POD REKLAMOU<\/p>\n
R\u00e1no bez k\u00e1vy? Pre mnoh\u00fdch takmer nepredstavite\u013en\u00e9. Dlh\u00e9 roky sme si tento ritu\u00e1l vysvet\u013eovali jednoducho. Kofe\u00edn<\/a> n\u00e1s postav\u00ed na nohy, zv\u00fd\u0161i bdelos\u0165, dod\u00e1 energiu.<\/p>\n Nov\u0161\u00ed v\u00fdskum v\u0161ak ukazuje, \u017ee \u00fa\u010dinok k\u00e1vy na n\u00e1ladu aj ment\u00e1lny v\u00fdkon siaha ove\u013ea hlb\u0161ie. Nejde len o kofe\u00edn. Dokonca aj bezkofe\u00ednov\u00e1 k\u00e1va dok\u00e1\u017ee ovplyvni\u0165 to, ako sa c\u00edtime a mysl\u00edme. K\u013e\u00fa\u010dov\u00e1 stopa vedie k \u010drevu.<\/p>\n Ako ovplyv\u0148uje mozog<\/p>\n Ned\u00e1vny v\u00fdskum<\/a> vedcov z University College Cork prin\u00e1\u0161a zauj\u00edmav\u00fd posun v tom, ako sa pozer\u00e1me na k\u00e1vu. U\u017e nejde len o kofe\u00edn a jeho r\u00fdchly \u00fa\u010dinok na bdelos\u0165. V\u00fdskumn\u00edci sledovali 62 zdrav\u00fdch dospel\u00fdch \u013eud\u00ed. Polovica z nich patrila medzi pravideln\u00fdch konzumentov k\u00e1vy, zatia\u013e \u010do druh\u00e1 polovica sa jej dlhodobo vyh\u00fdbala.<\/p>\n Ne\u0161lo len o subjekt\u00edvny pocit. Vedci analyzovali aj ich \u010drevn\u00fd mikrobi\u00f3m<\/a>. V\u00fdsledok? K\u00e1va pod\u013ea v\u0161etk\u00e9ho men\u00ed zlo\u017eenie \u010drevn\u00fdch bakt\u00e9ri\u00ed, ktor\u00e9 ovplyv\u0148uj\u00fa nielen tr\u00e1venie, ale aj fungovanie mozgu, a rob\u00ed to bez oh\u013eadu na to, \u010di obsahuje kofe\u00edn.<\/p>\n \u201eOba typy k\u00e1vy zn\u00ed\u017eili stres, depresiu, impulzivitu a z\u00e1pal, pri\u010dom z\u00e1rove\u0148 zlep\u0161ili n\u00e1ladu a kognit\u00edvny v\u00fdkon,\u201c cituje port\u00e1l ScienceAlert<\/a> autorov \u0161t\u00fadie. Aj bezkofe\u00ednov\u00e1 k\u00e1va teda prin\u00e1\u0161a telu l\u00e1tky, ktor\u00e9 dok\u00e1\u017eu zasiahnu\u0165 do regul\u00e1cie n\u00e1lady, vn\u00edmania stresu aj ment\u00e1lneho v\u00fdkonu.<\/p>\n Ak si to chce\u0161 predstavi\u0165 konkr\u00e9tnej\u0161ie, pom\u00f4\u017ee jednoduch\u00fd obraz. \u010crevo a mozog spolu neust\u00e1le komunikuj\u00fa. Bakt\u00e9rie v \u010dreve produkuj\u00fa l\u00e1tky, ktor\u00e9 dok\u00e1\u017eu ovplyvni\u0165 nervov\u00fd syst\u00e9m, n\u00e1ladu aj reakciu na stres<\/a>. A pr\u00e1ve k\u00e1va vstupuje do tohto syst\u00e9mu ako jemn\u00fd modul\u00e1tor.<\/p>\n Priebeh samotn\u00e9ho experimentu bol navrhnut\u00fd tak, aby v\u00fdsledky mali \u010do najv\u00e4\u010d\u0161iu v\u00fdpovedn\u00fa hodnotu. \u00da\u010dastn\u00edci najprv na ur\u010dit\u00fd \u010das \u00faplne vyradili k\u00e1vu zo svojho re\u017eimu. N\u00e1sledne ju mali op\u00e4\u0165 zaradi\u0165.<\/p>\n Niektor\u00ed dostali klasick\u00fa k\u00e1vu s kofe\u00ednom, in\u00ed bezkofe\u00ednov\u00fa. Nikto z nich nevedel, ktor\u00fa variantu pije. Obe skupiny v\u0161ak zaznamenali zmeny v \u010drevnom mikrobi\u00f3me, \u010do sa n\u00e1sledne odrazilo aj na psychike. Zauj\u00edmav\u00e9 v\u0161ak je, \u017ee jednotliv\u00e9 typy k\u00e1vy mali mierne odli\u0161n\u00e9 \u00fa\u010dinky.<\/p>\n Kofe\u00ednov\u00e1 vs. bezkofe\u00ednov\u00e1 k\u00e1va<\/p>\n Kofe\u00ednov\u00e1 k\u00e1va rob\u00ed presne to, \u010do od nej o\u010dak\u00e1va\u0161. Na\u0161tartuje bdelos\u0165<\/a>, zr\u00fdchli reakcie, pom\u00f4\u017ee lep\u0161ie zvl\u00e1da\u0165 stres a zni\u017euje pocit \u00fanavy. Tento efekt pozn\u00e1 azda ka\u017ed\u00fd, kto si dal espresso pred n\u00e1ro\u010dn\u00fdm d\u0148om alebo d\u00f4le\u017eit\u00fdm stretnut\u00edm.<\/p>\n Bezkofe\u00ednov\u00e1 k\u00e1va v\u0161ak prekvapila trochu inak. \u00da\u010dastn\u00edci \u0161t\u00fadie po nej lep\u0161ie spali, \u010dastej\u0161ie sa h\u00fdbali a v testoch pam\u00e4ti dosahovali prekvapivo lep\u0161ie v\u00fdsledky. Nejde teda o \u201ek\u00e1vu bez efektu\u201c, ale o in\u00fd typ vplyvu na organizmus.<\/p>\n To men\u00ed aj sp\u00f4sob, ak\u00fdm by sme mali na k\u00e1vu pozera\u0165. Doteraz sme ju vn\u00edmali najm\u00e4 ako stimulant, no v skuto\u010dnosti ide o komplexn\u00fd n\u00e1poj pln\u00fd bioakt\u00edvnych l\u00e1tok. Okrem kofe\u00ednu obsahuje napr\u00edklad polyfenoly, ktor\u00e9 p\u00f4sobia ako antioxidanty<\/a> a z\u00e1rove\u0148 sl\u00fa\u017eia ako \u201epotrava\u201c pre prospe\u0161n\u00e9 \u010drevn\u00e9 bakt\u00e9rie.<\/p>\n V\u00fdskumy dokonca ukazuj\u00fa, \u017ee pravideln\u00ed konzumenti k\u00e1vy maj\u00fa odli\u0161n\u00e9 zlo\u017eenie \u010drevn\u00e9ho mikrobi\u00f3mu. Napr\u00edklad \u0161t\u00fadia publikovan\u00e1 v \u010dasopise Nature Microbiology<\/a> identifikovala konkr\u00e9tny druh bakt\u00e9rie (Lawsonibacter asaccharolyticus), ktor\u00fd sa v\u00fdrazne \u010dastej\u0161ie vyskytuje u \u013eud\u00ed pij\u00facich k\u00e1vu. Vedci sa domnievaj\u00fa, \u017ee k\u00e1va m\u00f4\u017ee podporova\u0165 jej rast.<\/p>\n Pre\u010do na tom z\u00e1le\u017e\u00ed? Preto\u017ee \u010drevn\u00e9 bakt\u00e9rie, ako sme u\u017e spom\u00ednali, ovplyv\u0148uj\u00fa nielen tr\u00e1venie, ale aj imunitu, z\u00e1palov\u00e9 procesy a dokonca produkciu neurotransmiterov, ako je seroton\u00edn. A pr\u00e1ve ten \u00fazko s\u00favis\u00ed napr\u00edklad s n\u00e1ladou.<\/p>\n \u201eKomplexn\u00e9 poznatky \u0161t\u00fadie pripravuj\u00fa p\u00f4du pre bud\u00faci v\u00fdskum, ktor\u00fd by tieto interakcie mohol vyu\u017ei\u0165 na potenci\u00e1lne zdravotn\u00e9 intervencie, a zd\u00f4raz\u0148uj\u00fa d\u00f4le\u017eitos\u0165 pochopenia mnohostrann\u00fdch \u00fa\u010dinkov k\u00e1vy na \u013eudsk\u00fa fyziol\u00f3giu,\u201c uv\u00e1dzaj\u00fa autori \u0161t\u00fadie.<\/p>\n \n \u010c\u00edtaj viac z kateg\u00f3rie: Wellbeing<\/a>\n <\/p>\n \n \u010eakujeme, \u017ee \u010d\u00edta\u0161 Startitup. V pr\u00edpade, \u017ee m\u00e1\u0161 postreh alebo si na\u0161iel v \u010dl\u00e1nku chybu, nap\u00ed\u0161 n\u00e1m na redakcia@startitup.sk<\/a>.\n <\/p>\n Zdroje: Science\u00a0Alert<\/a>, Nature<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\u010cL\u00c1NOK POKRA\u010cUJE POD REKLAMOU R\u00e1no bez k\u00e1vy? Pre mnoh\u00fdch takmer nepredstavite\u013en\u00e9. Dlh\u00e9 roky sme si tento ritu\u00e1l vysvet\u013eovali…\n","protected":false},"author":2,"featured_media":55264,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[22300,1922,33,43,40,42,36,50,49,48],"class_list":{"0":"post-55263","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-svet","8":"tag-bezkofeinova-kava","9":"tag-kava","10":"tag-news","11":"tag-sk","12":"tag-slovak","13":"tag-slovencina","14":"tag-spravy","15":"tag-svet","16":"tag-world","17":"tag-world-news"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@sk\/116478684005234800","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/55263","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/comments?post=55263"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/55263\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media\/55264"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media?parent=55263"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/categories?post=55263"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/tags?post=55263"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}