{"id":6327,"date":"2013-06-13T02:10:42","date_gmt":"2013-06-13T00:10:42","guid":{"rendered":"http:\/\/www.invarena.cz\/?p=6327"},"modified":"2013-06-13T12:12:54","modified_gmt":"2013-06-13T10:12:54","slug":"jsme-jiz-na-kofeinu-zavisli-aniz-to-tusime","status":"publish","type":"post","link":"https:\/\/www.invarena.cz\/?p=6327","title":{"rendered":"Jsme ji\u017e na kofeinu z\u00e1visl\u00ed ani\u017e to tu\u0161\u00edme?"},"content":{"rendered":"

Kofein nen\u00ed jen v k\u00e1v\u011b \u010di \u010daji, ale t\u0159eba i v su\u0161enk\u00e1ch nebo bonbonech. M\u016f\u017ee b\u00fdt pro na\u0161e zdrav\u00ed v\u00e1\u017enou hrozbou? Mnoz\u00ed lid\u00e9 nemaj\u00ed tu\u0161en\u00ed, kolik\u00a0kofeinu<\/strong><\/a> u\u017e\u00edvaj\u00ed, m\u00edn\u00ed v\u011bdci, kte\u0159\u00ed nadm\u011brn\u00e9 spot\u0159eb\u011b kofeinu p\u0159ipisuj\u00ed\u00a0probl\u00e9my s nespavost\u00ed, tr\u00e1ven\u00edm nebo krevn\u00edm tlakem.<\/strong><\/p>\n

<\/p>\n

Kofein je sice nejobl\u00edben\u011bj\u0161\u00ed „psychoaktivn\u00ed droga“ na planet\u011b, ale v USA se te\u010f ptaj\u00ed, zda je rozumn\u00e9 p\u0159id\u00e1vat tento stimulant do dal\u0161\u00edch ka\u017edodenn\u00edch produkt\u016f, jako jsou energetick\u00e9 n\u00e1poje, su\u0161enky, slune\u010dnicov\u00e1 sem\u00ednka, sm\u011bsi o\u0159ech\u016f, \u017ev\u00fdka\u010dky a bonbony.<\/p>\n

Existuj\u00ed i p\u0159\u00edpady fat\u00e1ln\u00edho p\u0159ed\u00e1vkov\u00e1n\u00ed kofeinem, by\u0165 jsou velmi vz\u00e1cn\u00e9. V\u011bdci z americk\u00e9 Univerzity Johnse Hopkinse zjistili, \u017ee abstinen\u010dn\u00ed symptomy zahrnuj\u00ed \u00fanavu, bolesti hlavy, probl\u00e9my soust\u0159ed\u011bn\u00ed, bolesti sval\u016f a nevolnost. Ale v\u011bdci se zat\u00edm neshodnou, zda je u\u017e\u00edv\u00e1n\u00ed kofeinu opravdu \u0161kodliv\u00e9.<\/p>\n

Ned\u00e1vn\u00e1 studie Harvardovy \u0161koly ve\u0159ejn\u00e9ho zdrav\u00ed toti\u017e uvedla, \u017ee „pit\u00ed k\u00e1vy nem\u00e1 \u017e\u00e1dn\u00fd v\u00e1\u017en\u00fd \u0161kodliv\u00fd zdravotn\u00ed \u00fa\u010dinek“ a \u017ee vyp\u00edt a\u017e \u0161est \u0161\u00e1lk\u016f k\u00e1vy denn\u011b „nen\u00ed spojeno se zv\u00fd\u0161en\u00fdm rizikem \u00famrt\u00ed z jak\u00e9koli p\u0159\u00ed\u010diny“.<\/p>\n

P\u0159i p\u0159im\u011b\u0159en\u00e9m u\u017eit\u00ed m\u016f\u017ee m\u00edt kofein pozitivn\u00ed \u00fa\u010dinky. V\u00fdzkumy nazna\u010duj\u00ed, \u017ee m\u016f\u017ee b\u00fdt spojen\u00e9 se sn\u00ed\u017een\u00fdm rizikem rakoviny prostaty a prsu. Ned\u00e1vn\u00e1 studie spojila pit\u00ed k\u00e1vy a \u010daje s ni\u017e\u0161\u00edm rizikem cukrovky druh\u00e9ho typu.<\/p>\n

Americk\u00fd \u00da\u0159ad pro kontrolu potravin a l\u00e9k\u016f nicm\u00e9n\u011b sl\u00edbil, \u017ee „stanov\u00ed, jak\u00e9 je bezpe\u010dn\u00e9 mno\u017estv\u00ed u\u017e\u00edv\u00e1n\u00ed kofeinu“. Tento krok uv\u00edtali ti, kdo se ob\u00e1vaj\u00ed, \u017ee kofein \u010dasto konzumuj\u00ed i v produktech, kde by to ne\u010dekali. V d\u016fsledku toho si mohou sami nev\u011bdomky zp\u016fsobovat probl\u00e9my s nespavost\u00ed, tr\u00e1ven\u00edm nebo krevn\u00edm tlakem.<\/p>\n

V USA cht\u011bj\u00ed spot\u0159ebu kofeinu sni\u017eovat<\/strong><\/p>\n

Podle BBC News americk\u00e9 \u00fa\u0159ady prov\u011b\u0159uj\u00ed bezpe\u010dnost kofeinu v su\u0161enk\u00e1ch a energetick\u00fdch n\u00e1poj\u00edch. Vede je k tomu znepokojen\u00ed nad „kumulativn\u00edm efektem“ tohoto stimulantu, kter\u00fd se p\u0159id\u00e1v\u00e1 do \u010d\u00edm d\u00e1l t\u00edm v\u011bt\u0161\u00edho mno\u017estv\u00ed produkt\u016f. Je na\u0161e spole\u010dnost poh\u00e1n\u011bn\u00e1 \u010dajem a k\u00e1vou u\u017e p\u0159\u00edli\u0161 z\u00e1visl\u00e1 na nejobl\u00edben\u011bj\u0161\u00ed droze na sv\u011bt\u011b? pt\u00e1 se zpravodajsk\u00fd server BBC News.<\/p>\n

Bublaj\u00edc\u00ed konvice, aroma stoupaj\u00edc\u00ed z \u0161\u00e1lku, prvn\u00ed rann\u00ed dou\u0161ek. To je ritu\u00e1l, bez kter\u00e9ho by r\u00e1no pracovn\u00edho dne bylo pro miliony lid\u00ed jednodu\u0161e p\u0159\u00ed\u0161ern\u00e9. Kofein<\/strong><\/a> je, jak uvedl list New Scientist, nejobl\u00edben\u011bj\u0161\u00ed „psychoaktivn\u00ed droga“ na planet\u011b.<\/p>\n

Jen ve Spojen\u00fdch st\u00e1tech ho ka\u017ed\u00fd den u\u017e\u00edv\u00e1 v\u00edce ne\u017e 90 procent dosp\u011bl\u00e9 populace. Ale v sou\u010dasnosti dokonce i USA – domovina kokakoly \u010di kav\u00e1ren Starbucks – zpochyb\u0148uje, zda je rozumn\u00e9 p\u0159id\u00e1vat\u00a0kofein<\/strong><\/a> do dal\u0161\u00edch ka\u017edodenn\u00edch produkt\u016f, jako jsou vaflov\u00e9 su\u0161enky, slune\u010dnicov\u00e1 sem\u00ednka, sm\u011bsi o\u0159ech\u016f \u010di \u017eelatinov\u00e9 bonb\u00f3ny.<\/p>\n

V ned\u00e1vn\u00e9m prohl\u00e1\u0161en\u00ed americk\u00fd \u00da\u0159ad pro kontrolu potravin a l\u00e9k\u016f (FDA) vyp\u00edchl „ne\u0161\u0165astn\u00fd p\u0159\u00edklad“ \u017ev\u00fdka\u010dek Wrigley, kde ka\u017ed\u00fd pl\u00e1tek z balen\u00ed po osmi kusech obsahoval stejn\u00e9 mno\u017estv\u00ed\u00a0kofeinu<\/strong><\/a> jako p\u016fl \u0161\u00e1lku k\u00e1vy. Spole\u010dnost Wrigley n\u00e1sledn\u011b ozn\u00e1mila, \u017ee ve v\u00fdrob\u011b tohoto produktu ud\u011bl\u00e1 pauzu.<\/p>\n

FDA se rovn\u011b\u017e zam\u011b\u0159ila na energetick\u00e9 n\u00e1poje s vysok\u00fdm obsahem kofeinu<\/strong><\/a> a vyj\u00e1d\u0159ila obavy nad „kumulativn\u00edm efektem“ stimulantu.<\/p>\n

„Mnoz\u00ed lid\u00e9 jednodu\u0161e nemaj\u00ed tu\u0161en\u00ed, kolik\u00a0kofeinu<\/strong><\/a> u\u017e\u00edvaj\u00ed,“ \u0159ekla Lynne Goldmanov\u00e1, d\u011bkanka \u0161koly ve\u0159ejn\u00e9ho zdrav\u00ed a zdravotn\u00edch slu\u017eeb Univerzity George Washingtona. V d\u016fsledku toho si mohou sami nev\u011bdomky zp\u016fsobovat probl\u00e9my s nespavost\u00ed, poruchami tr\u00e1ven\u00ed, anebo krevn\u00edm tlakem. To je zvl\u00e1\u0161t\u011b znepokojiv\u00e9 pro rodi\u010de, kter\u00fdm m\u016f\u017ee d\u011blat probl\u00e9my kontrolovat, kolik kofeinu<\/strong><\/a> vlastn\u011b jejich d\u00edt\u011b zkonzumuje.<\/p>\n

Ale postavit se hegemonii kofeinu<\/strong><\/a> na planet\u011b, kter\u00e1 ka\u017edoro\u010dn\u011b zkonzumuje 120.000 tun t\u00e9to l\u00e1tky, m\u016f\u017ee b\u00fdt velmi t\u011b\u017ek\u00fd \u00fakol. Ve Finsku, kter\u00e9 pat\u0159\u00ed k zem\u00edm s nejv\u011bt\u0161\u00ed spot\u0159ebou\u00a0kofeinu<\/strong><\/a> na sv\u011bt\u011b, pr\u016fm\u011brn\u00fd dosp\u011bl\u00fd zkonzumuje 400 miligram\u016f t\u00e9to drogy denn\u011b. To je ekvivalent p\u011bti \u0161\u00e1lk\u016f k\u00e1vy denn\u011b a tak\u00e9 ekvivalent maxim\u00e1ln\u00ed denn\u00ed d\u00e1vky, kterou doporu\u010duj\u00ed britsk\u00e9 \u00fa\u0159ady.<\/p>\n

„Mysl\u00edme si, \u017ee p\u0159i u\u017e\u00edv\u00e1n\u00ed v p\u0159im\u011b\u0159en\u00e9m mno\u017estv\u00ed\u00a0kofein<\/strong><\/a> nep\u0159edstavuje riziko,“ \u0159ekla Sanna Kiuruov\u00e1 z finsk\u00e9ho \u00fa\u0159adu pro bezpe\u010dnost potravin. „K\u00e1vu pij\u00ed p\u0159edev\u0161\u00edm dosp\u011bl\u00ed, ne d\u011bti. A pro n\u00e1s jsou tyhle d\u00e1vky docela m\u00edrn\u00e9.“<\/p>\n

Ov\u0161em i Finov\u00e9 si za\u010d\u00ednaj\u00ed d\u011blat obavy z neust\u00e1le stoupaj\u00edc\u00ed spot\u0159eby stimulantu. Energetick\u00e9 n\u00e1poje s vysok\u00fdm obsahem kofeinu<\/strong><\/a> proto musej\u00ed ve Finsku n\u00e9st zdravotn\u00ed varov\u00e1n\u00ed, co\u017e bude od roku 2014 roz\u0161\u00ed\u0159ena na celou Evropskou unii.<\/p>\n

Slavn\u00ed pij\u00e1ci k\u00e1vy<\/strong><\/p>\n

O francouzsk\u00e9m spisovateli a dramatikovi Honor\u00e9 de Balzakovi se traduje, \u017ee pil a\u017e 50 \u0161\u00e1lk\u016f k\u00e1vy denn\u011b, bez nich\u017e pr\u00fd nebyl schopen ps\u00e1t.<\/p>\n

* Americk\u00fd filma\u0159 David Lynch sedm let denn\u011b jedl ve stejn\u00e9 restauraci v LosAngeles a pil a\u017e sedm slazen\u00fdch \u0161\u00e1lk\u016f k\u00e1vy, \u010d\u00edm\u017e si zaji\u0161\u0165oval „spoustu n\u00e1pad\u016f“.<\/p>\n

* Skladatel Ludwig van Beethoven si pe\u010dliv\u011b odpo\u010d\u00edt\u00e1val p\u0159esn\u011b 60 zrnek k\u00e1vy na jeden \u0161\u00e1lek, kdy\u017e si sv\u016fj obl\u00edben\u00fd n\u00e1poj va\u0159il.<\/p>\n

– Robbie Williams \u00fadajn\u011b konzumuje 36 \u0161\u00e1lk\u016f dvojit\u00e9ho espresa a 20 plechovek Red Bullu denn\u011b. N\u011bkte\u0159\u00ed kritici v tomto p\u0159\u00edpad\u011b u\u017e ale kreativn\u00ed p\u0159\u00ednos kofeinu pova\u017euj\u00ed za pon\u011bkud pochybn\u00fd.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Kofein nen\u00ed jen v k\u00e1v\u011b \u010di \u010daji, ale t\u0159eba i v su\u0161enk\u00e1ch nebo bonbonech. M\u016f\u017ee b\u00fdt pro na\u0161e zdrav\u00ed v\u00e1\u017enou hrozbou? Mnoz\u00ed lid\u00e9 nemaj\u00ed tu\u0161en\u00ed, […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-6327","post","type-post","status-publish","format-standard","hentry","category-zpravy"],"_links":{"self":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/6327","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6327"}],"version-history":[{"count":0,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/6327\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}