{"id":104049,"date":"2026-04-08T05:22:02","date_gmt":"2026-04-08T03:22:02","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=104049"},"modified":"2026-04-08T05:22:02","modified_gmt":"2026-04-08T03:22:02","slug":"novy-vyzkum-zpochybnil-bezpecnost-dvou-nejpopularnejsich-pomucek-na-spani","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2026\/04\/08\/novy-vyzkum-zpochybnil-bezpecnost-dvou-nejpopularnejsich-pomucek-na-spani\/","title":{"rendered":"Nov\u00fd v\u00fdzkum zpochybnil bezpe\u010dnost dvou nejpopul\u00e1rn\u011bj\u0161\u00edch pom\u016fcek na span\u00ed"},"content":{"rendered":"
<\/div>\n

Miliony lid\u00ed z\u00e1pas\u00edc\u00edch s nespavost\u00ed nach\u00e1zej\u00ed p\u0159\u00edslib bezpe\u010dn\u00e9ho p\u0159\u00edrodn\u00edho \u0159e\u0161en\u00ed v krabi\u010dce se sp\u00e1nkov\u00fdm hormonem melatoninem \u010di v jemn\u00e9m bzu\u010den\u00ed zvukov\u00e9ho za\u0159\u00edzen\u00ed.<\/span><\/strong><\/p>\n

Nov\u00e9 v\u00fdzkumy prezentovan\u00e9 na v\u00fdznamn\u00fdch v\u011bdeck\u00fdch konferenc\u00edch v\u0161ak vrhaj\u00ed st\u00edn pochybnost\u00ed na n\u011bkolik popul\u00e1rn\u00edch pom\u016fcek pro podporu sp\u00e1nku a nazna\u010duj\u00ed, \u017ee jejich dlouhodob\u00e9 nebo ka\u017edodenn\u00ed pou\u017e\u00edv\u00e1n\u00ed m\u016f\u017ee m\u00edt nezam\u00fd\u0161len\u00e9 zdravotn\u00ed n\u00e1sledky.<\/span><\/p>\n

Dv\u011b samostatn\u00e9 studie, jedna o melatoninu a druh\u00e1 o akustick\u00e9 pom\u016fcce produkuj\u00edc\u00ed r\u016f\u017eov\u00fd \u0161um, vyb\u00edzej\u00ed lidi k opatrnosti a poukazuj\u00ed na v\u00fdznamn\u00e9 mezery v na\u0161em ch\u00e1p\u00e1n\u00ed dlouhodob\u00e9 bezpe\u010dnosti a \u00fa\u010dinnosti t\u011bchto pom\u016fcek.<\/span><\/p>\n

Melatonin zp\u016fsobuje probl\u00e9my s srdcem<\/span><\/h2>\n

Na v\u011bdeck\u00e9 konferenci\u00a0<\/span>Americk\u00e9 kardiologick\u00e9 asociace<\/span><\/em>\u00a0v roce 2025 v New Orleans p\u0159edstavili v\u00fdzkumn\u00edci \u00favodn\u00ed anal\u00fdzu, kter\u00e1 zpochyb\u0148uje pov\u011bst p\u0159\u00ednos\u016f melatoninu.<\/span><\/p>\n

Studie, kter\u00e1 p\u0159ezkoumala p\u011btilet\u00e9 elektronick\u00e9 zdravotn\u00ed z\u00e1znamy v\u00edce ne\u017e 130 000 dosp\u011bl\u00fdch s chronickou nespavost\u00ed, srovn\u00e1vala ty, kte\u0159\u00ed u\u017e\u00edvali melatonin alespo\u0148 jeden rok, s t\u011bmi, kte\u0159\u00ed jej nikdy neu\u017e\u00edvali.<\/span><\/p>\n

Zji\u0161t\u011bn\u00ed byla v\u00fdznamn\u00e1: Dlouhodob\u00ed u\u017eivatel\u00e9 melatoninu m\u011bli o 90% vy\u0161\u0161\u00ed riziko vzniku srde\u010dn\u00edho selh\u00e1n\u00ed, 3,5kr\u00e1t vy\u0161\u0161\u00ed pravd\u011bpodobnost hospitalizace a t\u00e9m\u011b\u0159 2kr\u00e1t vy\u0161\u0161\u00ed pravd\u011bpodobnost \u00famrt\u00ed z jak\u00e9koli p\u0159\u00ed\u010diny b\u011bhem sledovan\u00e9ho obdob\u00ed ve srovn\u00e1n\u00ed s nepou\u017e\u00edvateli melatoninu.<\/span><\/p>\n

V\u00fdzkum je sice p\u0159esv\u011bd\u010div\u00fd, ale existuje k n\u011bmu i p\u00e1r v\u00fdhrad. Odborn\u00edci poznamenali, \u017ee pozorovac\u00ed studie nedok\u00e1\u017ee prok\u00e1zat p\u0159\u00edm\u00fd vztah mezi p\u0159\u00ed\u010dinou a n\u00e1sledkem. Faktory, jako jsou z\u00e1va\u017enost nespavosti, soub\u011b\u017en\u00e9 du\u0161evn\u00ed poruchy nebo u\u017e\u00edv\u00e1n\u00ed jin\u00fdch l\u00e9k\u016f, mohou ovliv\u0148ovat rozhodnut\u00ed o dlouhodob\u00e9m u\u017e\u00edv\u00e1n\u00ed melatoninu a zv\u00fd\u0161en\u00e1 zdravotn\u00ed rizika.<\/span><\/p>\n

Krom\u011b toho v mnoha zem\u00edch je melatonin neregulovan\u00fdm voln\u011b prodejn\u00fdm dopl\u0148kem stravy, co\u017e zt\u011b\u017euje sledov\u00e1n\u00ed jeho u\u017e\u00edv\u00e1n\u00ed pomoc\u00ed form\u00e1ln\u00edch zdravotn\u00edch z\u00e1znam\u016f.<\/span><\/p>\n

Hlavn\u00ed autor studie Dr. Ekenedilichukwu Nnadi zd\u016fraznil, \u017ee zji\u0161t\u011bn\u00e9 souvislosti mezi melatoninem a zv\u00fd\u0161en\u00fdmi zdravotn\u00edmi komplikacemi vyvol\u00e1vaj\u00ed obavy o bezpe\u010dnost tohoto \u0161iroce pou\u017e\u00edvan\u00e9ho dopl\u0148ku a vy\u017eaduje to dal\u0161\u00ed zkoum\u00e1n\u00ed.<\/span><\/p>\n

Historick\u00fd kontext u\u017e\u00edv\u00e1n\u00ed melatoninu na podporu sp\u00e1nku je kl\u00ed\u010dov\u00fd. Melatonin se v 90. letech 20. stolet\u00ed zm\u011bnil z hormonu na p\u0159edpis na \u0161iroce dostupn\u00fd dopln\u011bk stravy, co\u017e vedlo k rozmachu jeho pou\u017e\u00edv\u00e1n\u00ed jako \u201ep\u0159\u00edrodn\u00ed\u201c pom\u016fcky na span\u00ed.<\/span><\/p>\n

Jeho neregulovan\u00fd status znamen\u00e1, \u017ee \u00fa\u010dinnost a \u010distota se mohou mezi zna\u010dkami zna\u010dn\u011b li\u0161it a dlouhodob\u00e9 \u00fadaje o bezpe\u010dnosti v\u00fdrazn\u011b zaost\u00e1vaj\u00ed za jeho popularitou.<\/span><\/p>\n

Nov\u00e1 zji\u0161t\u011bn\u00ed nazna\u010duj\u00ed, \u017ee p\u0159i chronick\u00e9 nespavosti (stavu, na kter\u00fd melatonin nen\u00ed form\u00e1ln\u011b indikov\u00e1n jako l\u00e9\u010dba) nemus\u00ed b\u00fdt jeho bezb\u0159eh\u00e9 u\u017e\u00edv\u00e1n\u00ed tak ne\u0161kodn\u00e9, jak se p\u016fvodn\u011b p\u0159edpokl\u00e1dalo.<\/span><\/p>\n

Neo\u010dek\u00e1van\u00e1 da\u0148 za uklid\u0148uj\u00edc\u00ed zvuk<\/span><\/h2>\n

Soub\u011b\u017en\u011b se objevuj\u00ed obavy i ve sv\u011bt\u011b\u00a0<\/span>akustick\u00fdch pom\u016fcek na span\u00ed<\/span><\/a>\u00a0. D\u016fkladn\u00e1 studie sp\u00e1nkov\u00e9 laborato\u0159e na\u00a0<\/span>Pensylv\u00e1nsk\u00e9 univerzit\u011b<\/span><\/em>\u00a0, publikovan\u00e1 v odborn\u00e9m \u010dasopise\u00a0<\/span>Sleep<\/span><\/em>\u00a0, zkoumala \u00fa\u010dinky r\u016f\u017eov\u00e9ho \u0161umu.<\/span><\/p>\n

R\u016f\u017eov\u00fd \u0161um se \u010dasto prezentuje jako jemn\u011bj\u0161\u00ed a mozku prosp\u011b\u0161n\u011bj\u0161\u00ed alternativa k b\u00edl\u00e9mu \u0161umu pro maskov\u00e1n\u00ed hluku.<\/span><\/p>\n

Sedmilet\u00e1 studie s 25 zdrav\u00fdmi dosp\u011bl\u00fdmi p\u0159inesla zaj\u00edmav\u00e9 v\u00fdsledky: nep\u0159etr\u017eit\u00e9 p\u0159ehr\u00e1v\u00e1n\u00ed r\u016f\u017eov\u00e9ho \u0161umu s m\u00edrnou hlasitost\u00ed (p\u0159ibli\u017en\u011b 50 decibel\u016f) sn\u00ed\u017eilo f\u00e1zi REM sp\u00e1nku v pr\u016fm\u011bru o 15 a\u017e 20 minut za noc.<\/span><\/p>\n

REM sp\u00e1nek je kritickou f\u00e1z\u00ed pro zpracov\u00e1n\u00ed emoc\u00ed, konsolidaci pam\u011bti a regeneraci mozku. Studie zjistila, \u017ee r\u016f\u017eov\u00fd \u0161um br\u00e1nil spu\u0161t\u011bn\u00ed a naru\u0161oval udr\u017een\u00ed t\u00e9to d\u016fle\u017eit\u00e9 f\u00e1ze.<\/span><\/p>\n

Kdy\u017e byl r\u016f\u017eov\u00fd \u0161um pou\u017eit k maskov\u00e1n\u00ed skute\u010dn\u00e9ho hluku z prost\u0159ed\u00ed, negativn\u00ed \u00fa\u010dinky se zn\u00e1sobily, co\u017e vedlo ke sn\u00ed\u017een\u00ed hlubok\u00e9ho i REM sp\u00e1nku.<\/span><\/p>\n

\u201eTato kombinace zp\u016fsobila ve sp\u00e1nku doslova spou\u0161\u0165,\u201c<\/span><\/em>\u00a0poznamenal hlavn\u00ed autor studie Dr. Mathias Basner.<\/span><\/p>\n

V kontrastu s t\u00edm byly jednoduch\u00e9 p\u011bnov\u00e9 \u0161punty do u\u0161\u00ed vysoce \u00fa\u010dinn\u00e9 p\u0159i zm\u00edr\u0148ov\u00e1n\u00ed vlivu environment\u00e1ln\u00edho hluku, p\u0159i\u010dem\u017e obnovily v\u011bt\u0161inu ztracen\u00e9ho hlubok\u00e9ho sp\u00e1nku bez po\u0161kozen\u00ed REM sp\u00e1nku.<\/span><\/p>\n

Studie nezjistila okam\u017eit\u00e9 kognitivn\u00ed deficity n\u00e1sleduj\u00edc\u00ed den po jedin\u00e9 noci pou\u017e\u00edv\u00e1n\u00ed r\u016f\u017eov\u00e9ho \u0161umu, ale \u00fa\u010dastn\u00edci studie hl\u00e1sili konzistentn\u011b hor\u0161\u00ed subjektivn\u00ed kvalitu sp\u00e1nku, bd\u011blost a n\u00e1ladu.<\/span><\/p>\n

Dr. Basner pouk\u00e1zal na to, \u017ee kumulativn\u00ed \u00fa\u010dinek ztr\u00e1ty 20 minut REM sp\u00e1nku ka\u017edou noc, zejm\u00e9na u t\u011bch, kte\u0159\u00ed ji\u017e trp\u00ed nedostatkem sp\u00e1nku, by mohl m\u00edt dlouhodob\u00e9 d\u016fsledky pro emocion\u00e1ln\u00ed zdrav\u00ed a obecn\u011b pro zdrav\u00ed mozku.<\/span><\/p>\n

Jak se zorientovat v multimiliardov\u00e9m odv\u011btv\u00ed sp\u00e1nkov\u00fdch pom\u016fcek<\/span><\/h2>\n

Zm\u00edn\u011bn\u00e9 studie p\u0159ich\u00e1zej\u00ed uprost\u0159ed boomu glob\u00e1ln\u00edho pr\u016fmyslu s pom\u016fckami na span\u00ed v hodnot\u011b des\u00edtek miliard dolar\u016f, kter\u00fd je poh\u00e1n\u011bn v\u0161udyp\u0159\u00edtomnou nespavost\u00ed a agresivn\u00edm marketingem produkt\u016f \u010dasto ozna\u010dovan\u00fdch jako \u201ev\u011bdecce podlo\u017een\u00e9\u201c nebo \u201ep\u0159\u00edrodn\u00ed\u201c.<\/span><\/p>\n

Nov\u00fd v\u00fdzkum poukazuje na p\u0159etrv\u00e1vaj\u00edc\u00ed probl\u00e9m: zna\u010dn\u00fd nedostatek d\u016fkladn\u00fdch, dlouhodob\u00fdch dat o bezpe\u010dnosti a \u00fa\u010dinnosti mnoha spot\u0159ebitelsk\u00fdch \u0159e\u0161en\u00ed na podporu sp\u00e1nku.<\/span><\/p>\n

V p\u0159\u00edpad\u011b melatoninu je ot\u00e1zkou kardiovaskul\u00e1rn\u00ed bezpe\u010dnost b\u011bhem let pou\u017e\u00edv\u00e1n\u00ed. V p\u0159\u00edpad\u011b zvukov\u00fdch za\u0159\u00edzen\u00ed jde o pochopen\u00ed neurofyziologick\u00e9ho vlivu vys\u00edl\u00e1n\u00ed neust\u00e1l\u00e9ho um\u011bl\u00e9ho hluku do sp\u00edc\u00edho mozku noc co noc.<\/span><\/p>\n

Obzvl\u00e1\u0161\u0165 zraniteln\u00e9 skupiny obyvatelstva, jako jsou kojenci a d\u011bti, jsou dal\u0161\u00edm varovn\u00fdm sign\u00e1lem.<\/span><\/p>\n

Novorozenci tr\u00e1v\u00ed p\u0159ibli\u017en\u011b polovinu sv\u00e9ho sp\u00e1nku v REM f\u00e1zi, co\u017e je kl\u00ed\u010dov\u00e9 st\u00e1dium pro v\u00fdvoj mozku. Roz\u0161\u00ed\u0159en\u00e9 pou\u017e\u00edv\u00e1n\u00ed za\u0159\u00edzen\u00ed s b\u00edl\u00fdm nebo r\u016f\u017eov\u00fdm \u0161umem v jesl\u00edch, a\u010dkoli je praktick\u00e9 pro maskov\u00e1n\u00ed ru\u0161iv\u00fdch zvuk\u016f z prost\u0159ed\u00ed, si nyn\u00ed vzhledem k v\u00fd\u0161e uveden\u00fdm zji\u0161t\u011bn\u00edm vy\u017eaduje opatrn\u011bj\u0161\u00ed p\u0159\u00edstup.<\/span><\/p>\n

V\u00fdzva k informovan\u00e9 opatrnosti<\/span><\/h2>\n

Pointou t\u011bchto studi\u00ed nen\u00ed plo\u0161n\u011b zavrhnout v\u0161echny pom\u016fcky na span\u00ed, ale pou\u017e\u00edvat je uv\u011bdom\u011bleji.<\/span><\/p>\n

V\u00fdzkum nazna\u010duje, \u017ee pacienti a l\u00e9ka\u0159i, kte\u0159\u00ed zva\u017euj\u00ed melatonin, by jej m\u011bli pova\u017eovat za kr\u00e1tkodobou mo\u017enost \u00fapravy cirkadi\u00e1nn\u00edho rytmu, nikoli za trval\u00fd l\u00e9k na chronickou nespavost.<\/span><\/p>\n

K melatoninu a jeho dlouhodob\u00e9mu u\u017e\u00edv\u00e1n\u00ed by se m\u011blo p\u0159istupovat opatrn\u011b, dokud nebudou k dispozici podrobn\u011bj\u0161\u00ed \u00fadaje o jeho bezpe\u010dnosti.<\/span><\/p>\n

Pro ty, kte\u0159\u00ed hledaj\u00ed \u00falevu od hlukov\u00e9ho zne\u010di\u0161t\u011bn\u00ed, sou\u010dasn\u00e9 d\u016fkazy nazna\u010duj\u00ed, \u017ee blokov\u00e1n\u00ed zvuk\u016f pomoc\u00ed \u0161punt\u016f do u\u0161\u00ed nebo lep\u0161\u00ed izolace lo\u017enice je fyziologicky lep\u0161\u00ed ne\u017e maskov\u00e1n\u00ed zvuku v\u011bt\u0161\u00edm mno\u017estv\u00edm zvuku.<\/span><\/p>\n

Pokud se pou\u017e\u00edvaj\u00ed zvukov\u00e1 za\u0159\u00edzen\u00ed, odborn\u00edci doporu\u010duj\u00ed udr\u017eovat hlasitost co nejni\u017e\u0161\u00ed, um\u00edstit za\u0159\u00edzen\u00ed daleko od postele a zv\u00e1\u017eit pou\u017eit\u00ed \u010dasova\u010de pro jeho vypnut\u00ed po usnut\u00ed, m\u00edsto abyste jej pou\u0161t\u011bli celou noc.<\/span><\/p>\n

Z\u00e1v\u011br<\/span><\/h2>\n

Tento nov\u00fd v\u00fdzkum v kone\u010dn\u00e9m d\u016fsledku potvrzuje z\u00e1kladn\u00ed princip: sp\u00e1nek je aktivn\u00ed, komplexn\u00ed neurologick\u00fd stav, kter\u00fd m\u016f\u017ee b\u00fdt jemn\u011b naru\u0161en vnit\u0159n\u00edmi a vn\u011bj\u0161\u00edmi z\u00e1sahy.<\/span><\/p>\n

Hled\u00e1n\u00ed jednoduch\u00fdch voln\u011b prodejn\u00fdch \u0159e\u0161en\u00ed slo\u017eit\u00fdch probl\u00e9m\u016f m\u016f\u017ee n\u011bkdy v\u00e9st k nep\u0159edv\u00eddan\u00fdm rizik\u016fm.<\/span><\/p>\n

Auto\u0159i obou studi\u00ed do\u0161li k z\u00e1v\u011bru, \u017ee je nal\u00e9hav\u011b nutn\u00fd dal\u0161\u00ed v\u00fdzkum. Mezit\u00edm spot\u0159ebitel\u00e9, l\u00e9ka\u0159i a regula\u010dn\u00ed org\u00e1ny by m\u011bly skepticky zkoumat popul\u00e1rn\u00ed trendy v oblasti zdrav\u00ed a up\u0159ednost\u0148ovat p\u0159\u00edsnou v\u011bdu p\u0159ed marketingov\u00fdmi tvrzen\u00edmi.<\/span><\/p>\n

V k\u0159ehk\u00e9m ekosyst\u00e9mu sp\u00e1nku je nejp\u0159irozen\u011bj\u0161\u00ed pom\u016fcka nejt\u011b\u017e\u0161\u00ed zabaliteln\u00e1 a prodateln\u00e1: tmav\u00e1, tich\u00e1 a chladn\u00e1 m\u00edstnost vyhrazena k odpo\u010dinku a nic jin\u00e9ho.<\/span><\/p>\n

Autor: Willow Tohi, Zdroj:\u00a0<\/span>naturalnews.com<\/span><\/a><\/p>\n

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

Miliony lid\u00ed z\u00e1pas\u00edc\u00edch s nespavost\u00ed nach\u00e1zej\u00ed p\u0159\u00edslib bezpe\u010dn\u00e9ho p\u0159\u00edrodn\u00edho \u0159e\u0161en\u00ed v krabi\u010dce se sp\u00e1nkov\u00fdm hormonem…<\/p>\n","protected":false},"author":2,"featured_media":104050,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[6224,1820,21],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/104049"}],"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=104049"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/104049\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/104050"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=104049"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=104049"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=104049"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}