{"id":29308,"date":"2023-06-03T01:07:13","date_gmt":"2023-06-02T23:07:13","guid":{"rendered":"http:\/\/www.infokuryr.cz\/n\/?p=29308"},"modified":"2023-06-02T17:19:02","modified_gmt":"2023-06-02T15:19:02","slug":"nova-studie-delaji-nas-rafinovane-sacharidy-hloupymi","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2023\/06\/03\/nova-studie-delaji-nas-rafinovane-sacharidy-hloupymi\/","title":{"rendered":"Nov\u00e1 studie: D\u011blaj\u00ed n\u00e1s rafinovan\u00e9 sacharidy hloup\u00fdmi?"},"content":{"rendered":"
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Podle ned\u00e1vn\u00e9 studie bychom se pravd\u011bpodobn\u011b m\u011bli pokud mo\u017eno obej\u00edt bez klasick\u00e9ho b\u00edl\u00e9ho pe\u010diva a m\u00edsto toho bychom m\u011bli j\u00edst mnohem v\u00edce celozrnn\u00fdch v\u00fdrobk\u016f: Rafinovan\u00e9 sacharidy nejsou jen v\u00e1\u017en\u00fdm zdravotn\u00edm probl\u00e9mem \u2013 zjevn\u011b maj\u00ed tak\u00e9 negativn\u00ed dopad na na\u0161i kognitivn\u00ed v\u00fdkonnost.\u00a0D\u011bl\u00e1 n\u00e1s modern\u00ed strava nemocn\u00fdmi a hloup\u00fdmi?<\/span><\/strong><\/p>\n

V\u00a0<\/span>nov\u00e9 studii<\/span><\/a>\u00a0publikovan\u00e9 v \u010dasopise\u00a0<\/span>Personality and Individual Differences<\/span><\/em>\u00a0t\u00fdm francouzsk\u00fdch v\u011bdc\u016f spojil rafinovan\u00e9 sacharidy se zhor\u0161en\u00edm kognitivn\u00edch funkc\u00ed.\u00a0To plat\u00ed i pro mlad\u00e9, zdrav\u00e9 dosp\u011bl\u00e9.<\/span><\/p>\n

I kdy\u017e n\u011bkte\u0159\u00ed odborn\u00edci na v\u00fd\u017eivu doporu\u010duj\u00ed sacharidy \u00fapln\u011b vynechat, nen\u00ed to dobr\u00e1 rada.\u00a0T\u011blo pot\u0159ebuje sacharidy jako energii a stejn\u011b tak mozek.\u00a0<\/span>Ale ne v\u0161echny sacharidy jsou si rovny:<\/span><\/strong>\u00a0Komplexn\u00ed, nerafinovan\u00e9 sacharidy, jak\u00e9 se nach\u00e1zej\u00ed v cel\u00fdch zrnech, jsou nezbytnou sou\u010d\u00e1st\u00ed vyv\u00e1\u017een\u00e9 stravy a dod\u00e1vaj\u00ed na\u0161emu t\u011blu energii, kterou pot\u0159ebuje.<\/span><\/p>\n

Na druhou stranu pr\u016fmyslov\u011b vyr\u00e1b\u011bn\u00e9, rafinovan\u00e9 sacharidy, jako jsou ty, kter\u00e9 se nach\u00e1zej\u00ed v b\u00edl\u00e9m pe\u010divu, kter\u00e9 jsou zbaveny \u017eivin, jako jsou otruby, \u0161krob a vl\u00e1knina, jsou dobr\u00e9 pouze pro rychl\u00fd p\u0159\u00edsun cukru, ale ne pro trval\u00e9 zv\u00fd\u0161en\u00ed energie.\u00a0<\/span>T\u011blo si proto brzy bude \u017e\u00e1dat v\u00edc.\u00a0Dalo by se hovo\u0159it o n\u00e1vyku, kter\u00fd z dlouhodob\u00e9ho hlediska m\u016f\u017ee v\u00e9st\u00a0k\u00a0<\/span>poruch\u00e1m inzulinu a dal\u0161\u00edm chronick\u00fdm onemocn\u011bn\u00edm, v\u010detn\u011b neurologick\u00fdch poruch .<\/span><\/a><\/strong><\/p>\n

Jak v\u011bdci poznamen\u00e1vaj\u00ed ve sv\u00e9 studii, zaveden\u00ed rafinovan\u00fdch sacharid\u016f do lidsk\u00e9 stravy je velmi ned\u00e1vn\u00fdm fenom\u00e9nem.\u00a0Objevily se a\u017e ve 20. stolet\u00ed spolu se zbytkem kultury hromadn\u00e9 v\u00fdroby.\u00a0<\/span>N\u00e1\u0161 mozek, jak uv\u00e1d\u011bj\u00ed v\u011bdci ve sv\u00e9 rozs\u00e1hl\u00e9 studii, by j\u00edm klidn\u011b mohl trp\u011bt.<\/span><\/strong><\/p>\n

Po\u0161kozen\u00ed kognice p\u0159ed vznikem nemoci?<\/span><\/h3>\n

\u201eOd druh\u00e9 poloviny 20. stolet\u00ed do\u0161lo v z\u00e1padn\u00edm sv\u011bt\u011b k masivn\u00edmu posunu ve stravov\u00e1n\u00ed, s dramatick\u00fdm n\u00e1r\u016fstem spot\u0159eby rafinovan\u00fdch sacharid\u016f, co\u017e m\u011blo za n\u00e1sledek \u010detn\u00e9 nep\u0159\u00edzniv\u00e9 zdravotn\u00ed \u00fa\u010dinky,\u201c stoj\u00ed v abstraktu studie.\u00a0<\/span>„Fyziologick\u00e9 mechanismy spojen\u00e9 s konzumac\u00ed rafinovan\u00fdch sacharid\u016f,“ pokra\u010duje, „jako je hyperinzulin\u00e9mie a inzul\u00ednov\u00e1 rezistence, mohou ovlivnit kognici u zdrav\u00fdch jedinc\u016f p\u0159ed n\u00e1stupem obezity, metabolick\u00e9ho onemocn\u011bn\u00ed nebo demence.“<\/span><\/strong><\/p>\n

Vzhledem k tomu, \u017ee v\u00fdzkum v t\u00e9to oblasti m\u00e1 tendenci se zam\u011b\u0159ovat na star\u0161\u00ed dosp\u011bl\u00e9, kte\u0159\u00ed ji\u017e prod\u011blali chronick\u00e9 onemocn\u011bn\u00ed, v\u011bdci se rozhodli konkr\u00e9tn\u011b studovat mlad\u0161\u00ed dosp\u011bl\u00e9, kte\u0159\u00ed mohou poci\u0165ovat negativn\u00ed kognitivn\u00ed \u00fa\u010dinky rafinovan\u00fdch sacharid\u016f, ne\u017e se u nich rozvine dlouhodob\u00fd stav, jako je cukrovka nebo demence.\u00a0<\/span>V\u011bdci p\u0159ijali 95 zdrav\u00fdch mlad\u00fdch dosp\u011bl\u00fdch ve v\u011bku 20 a\u017e 30 let z univerzity v Montpellier ve Francii.\u00a0<\/span><\/strong>Ka\u017ed\u00fd den byla skupina t\u0159\u00ed nebo \u010dty\u0159 \u00fa\u010dastn\u00edk\u016f po\u017e\u00e1d\u00e1na, aby se shrom\u00e1\u017edila ve v\u00fdzkumn\u00e9 laborato\u0159i.\u00a0Po p\u0159\u00edjezdu byli po\u017e\u00e1d\u00e1ni, aby nejprve provedli test nazvan\u00fd\u00a0<\/span>Wechsler\u016fv kognitivn\u00ed test substituce \u010d\u00edslicov\u00fdch symbol\u016f.<\/span><\/em>zav\u0159\u00edt.\u00a0Pot\u00e9 jim byla zm\u011b\u0159ena hladina cukru v krvi a pot\u00e9 jim byla d\u00e1na jedna ze dvou mo\u017enost\u00ed sn\u00eddan\u011b.<\/span><\/p>\n

Ka\u017ed\u00e1 ze sn\u00eddan\u00ed, kter\u00e9 byly n\u00e1hodn\u011b p\u0159id\u011bleny student\u016fm, obsahovala 500 kalori\u00ed.\u00a0<\/span>Sn\u00eddan\u011b jedn\u00e9 skupiny, skl\u00e1daj\u00edc\u00ed se z celozrnn\u00e9ho chleba, m\u00e1sla, s\u00fdra, jednoho syrov\u00e9ho ovoce a neslazen\u00e9ho n\u00e1poje, obsahovala pouze nerafinovan\u00e9 sacharidy, zat\u00edmco druh\u00e1 skupina m\u011bla francouzskou bagetu vyrobenou ze zpracovan\u00e9 mouky, d\u017eemu, ovocn\u00e9 \u0161\u0165\u00e1vy a n\u00e1poj s cukrem jedl rafinovan\u00e9 sacharidy.\u00a0<\/span><\/strong>Po sn\u00eddani prob\u011bhly dal\u0161\u00ed testy.\u00a0Jak p\u016fl hodiny, tak jednu a p\u016fl hodiny po dopoledn\u00edm j\u00eddle byl \u00fa\u010dastn\u00edk\u016fm znovu zm\u011b\u0159en glykemick\u00fd index.\u00a0P\u0159i t\u0159et\u00ed glykemick\u00e9 kontrole byli po\u017e\u00e1d\u00e1ni, aby podstoupili test kognitivn\u00edho p\u0159ep\u00edna\u010de podruh\u00e9.\u00a0\u00da\u010dastn\u00edci byli tak\u00e9 po\u017e\u00e1d\u00e1ni, aby<\/span>Vypl\u0148te dotazn\u00edky obsahuj\u00edc\u00ed podrobn\u00e9 ot\u00e1zky o jejich osobn\u00edm \u017eivot\u011b, anamn\u00e9ze a strav\u011b.<\/span><\/strong><\/p>\n

\u010c\u00edm v\u00edce rafinovan\u00fdch sacharid\u016f, t\u00edm ni\u017e\u0161\u00ed kognitivn\u00ed v\u00fdkon<\/span><\/h3>\n

V\u011bdci byli schopni potvrdit, \u017ee \u00fa\u010dastn\u00edci, kte\u0159\u00ed konzumovali bagetu z rafinovan\u00e9 mouky, m\u011bli \u201ev\u00fdrazn\u00fd okam\u017eit\u00fd \u00fa\u010dinek\u201c na hladinu cukru v krvi.\u00a0<\/span>Pomoc\u00ed dotazn\u00edk\u016f byli v\u011bdci tak\u00e9 schopni ur\u010dit, \u017ee kognitivn\u00ed v\u00fdkon byl ni\u017e\u0161\u00ed, \u010d\u00edm v\u00edce rafinovan\u00fdch sacharid\u016f bylo konzumov\u00e1no mezi j\u00eddly.\u00a0<\/span><\/strong>Tento \u00fa\u010dinek byl zachov\u00e1n, i kdy\u017e byly vzaty v \u00favahu potenci\u00e1ln\u00ed matouc\u00ed faktory, jako je v\u011bk, pohlav\u00ed, BMI nebo fyzick\u00e1 aktivita.<\/span><\/p>\n

Je tedy z\u0159ejm\u00e9, \u017ee existuj\u00ed ur\u010dit\u00e9 korelace mezi stravou a kognitivn\u00edmi schopnostmi lid\u00ed.\u00a0<\/span>Z toho v\u0161ak plyne i z\u00e1v\u011br, \u017ee bychom m\u011bli obecn\u011b p\u0159ehodnotit sv\u016fj j\u00eddeln\u00ed\u010dek \u2013 zejm\u00e9na ten na\u0161ich d\u011bt\u00ed.\u00a0<\/span><\/strong>V\u0161echen ten rafinovan\u00fd cukr a rafinovan\u00e1 p\u0161eni\u010dn\u00e1 mouka n\u00e1m z dlouhodob\u00e9ho hlediska neprosp\u00edvaj\u00ed.\u00a0Zji\u0161t\u011bn\u00ed francouzsk\u00fdch v\u00fdzkumn\u00edk\u016f je proto t\u0159eba br\u00e1t v\u00e1\u017en\u011b a d\u00e1le je prohlubovat.<\/span><\/p>\n

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Podle ned\u00e1vn\u00e9 studie bychom se pravd\u011bpodobn\u011b m\u011bli pokud mo\u017eno obej\u00edt bez klasick\u00e9ho b\u00edl\u00e9ho pe\u010diva a…<\/p>\n","protected":false},"author":2,"featured_media":29309,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[5118,839,3219,21],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/29308"}],"collection":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/comments?post=29308"}],"version-history":[{"count":1,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/29308\/revisions"}],"predecessor-version":[{"id":29310,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/29308\/revisions\/29310"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/29309"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=29308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=29308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=29308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}