{"id":9492,"date":"2024-02-19T06:00:00","date_gmt":"2024-02-19T06:00:00","guid":{"rendered":"https:\/\/www.mojemedunka.cz\/?p=9492"},"modified":"2024-02-14T19:04:02","modified_gmt":"2024-02-14T19:04:02","slug":"z-medunkove-knihovnicky-melatonin-a-jeho-ucinky","status":"publish","type":"post","link":"https:\/\/www.mojemedunka.cz\/index.php\/2024\/02\/19\/z-medunkove-knihovnicky-melatonin-a-jeho-ucinky\/","title":{"rendered":"Z medu\u0148kov\u00e9 knihovni\u010dky: Melatonin a jeho \u00fa\u010dinky"},"content":{"rendered":"\n<p>Na\u0161e spolupracovnice a v\u00e1\u017een\u00e1 autorka, v\u011bdkyn\u011b <em><strong>prof. RNDr. Anna Struneck\u00e1, DrSc<\/strong><\/em>., obohatila p\u0159ed \u010dasem medu\u0148kovou edici zaj\u00edmav\u00fdch knih ( <a href=\"http:\/\/www.knihovnickamedunky.cz\" data-type=\"URL\" data-id=\"www.knihovnickamedunky.cz\">www.knihovnickamedunky.cz<\/a>) o pozoruhodn\u00fd titul s n\u00e1zvem <em><strong>\u0160i\u0161inka Okno do bo\u017e\u00edho internetu<\/strong><\/em>. T\u00e9matem funkce \u0161i\u0161inky se zab\u00fdvala v r\u00e1mci svoj\u00ed dlouholet\u00e9 badatelsk\u00e9 a pedagogick\u00e9 \u010dinnosti na Univerzit\u011b Karlov\u011b v Praze. V knize p\u0159edest\u00edr\u00e1 \u0161irok\u00e9 a ne\u010dekan\u00e9 souvislosti a p\u0159edkl\u00e1d\u00e1 p\u0159ed vn\u00edmav\u00e9ho \u010dten\u00e1\u0159e mnoh\u00e1 tajemstv\u00ed, kter\u00e1 v u\u010debnic\u00edch nenajdete. <strong>Z knihy vyb\u00edr\u00e1me \u010d\u00e1st kapitoly v\u011bnovan\u00e9 melatoninu &#8211; tak\u0159ka &#8222;z\u00e1zra\u010dn\u00e9mu&#8220; hormonu, kter\u00fd v\u00fdznamn\u011b ovliv\u0148uje nejen sp\u00e1nek, ale i celkov\u00e9 zdrav\u00ed \u010dlov\u011bka&#8230; <\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><br><strong>Hlavn\u00ed hormon \u0161i\u0161inky melatonin je v\u00a0posledn\u00edch dek\u00e1d\u00e1ch v\u00a0centru pozornosti des\u00edtek badatel\u016f i farmaceutick\u00fdch firem, proto\u017ee m\u00e1 dalekos\u00e1hl\u00e9 \u00fa\u010dinky na stav cel\u00e9ho organismu.<\/strong> Laboratorn\u00ed studie i klinick\u00e9 zku\u0161enosti ukazuj\u00ed, \u017ee ovliv\u0148uje sp\u00e1nek, ob\u011bh krve, krevn\u00ed tlak, t\u011blesnou teplotu, metabolismus cukr\u016f, tuk\u016f i b\u00edlkovin. Ovliv\u0148uje produkci pohlavn\u00edch hormon\u016f, imunologick\u00e9 reakce organismu, pr\u016fb\u011bh st\u00e1rnut\u00ed, chov\u00e1n\u00ed i psychologick\u00e9 reakce. Na z\u00e1klad\u011b n\u011bkter\u00fdch laboratorn\u00edch n\u00e1lez\u016f za\u010dal b\u00fdt melatonin prezentov\u00e1n ve v\u011bdeck\u00e9m i bulv\u00e1rn\u00edm tisku jako t\u00e9m\u011b\u0159 z\u00e1zra\u010dn\u00fd hormon ovliv\u0148uj\u00edc\u00ed st\u00e1rnut\u00ed, n\u00e1dorov\u00e1 onemocn\u011bn\u00ed a imunitu. Za nejv\u00fdznamn\u011bj\u0161\u00ed jsou pova\u017eov\u00e1ny jeho synchroniza\u010dn\u00ed, imunostimula\u010dn\u00ed a antioxida\u010dn\u00ed \u00fa\u010dinky.<br>Experiment\u00e1ln\u011b a dobrovoln\u011b po\u017e\u00edvali melatonin i \u00fa\u010dastn\u00edci sv\u011btov\u00e9ho fyziologick\u00e9ho kongresu v\u00a0Austr\u00e1lii, aby pomohli p\u0159i ov\u011b\u0159ov\u00e1n\u00ed \u00fa\u010dink\u016f melatoninu p\u0159i odstra\u0148ov\u00e1n\u00ed tzv. jet lag symptom\u016f \u2013 p\u0159echodn\u00e9ho zhroucen\u00ed biologick\u00fdch rytm\u016f zp\u016fsoben\u00e9ho p\u0159eletem n\u011bkolika \u010dasov\u00fdch p\u00e1sem (osobn\u00ed zku\u0161enost). Melatonin se pod\u00edl\u00ed i\u00a0na regulaci celoro\u010dn\u00edho rytmu, tj. st\u0159\u00edd\u00e1n\u00ed obdob\u00ed l\u00e9ta a\u00a0zimy.<\/p>\n\n\n\n<p><strong>Melatonin a sp\u00e1nek<\/strong><br>U\u00a0\u010dlov\u011bka m\u00e1 melatonin vliv na cel\u00fd hypotalamo-hypofyz\u00e1rn\u00ed syst\u00e9m a\u00a0vzestup jeho hladiny je spojen se zv\u00fd\u0161en\u00fdm nutk\u00e1n\u00edm ke sp\u00e1nku. B\u00fdv\u00e1 proto naz\u00fdv\u00e1n sp\u00e1nkov\u00fdm hormonem. Po cel\u00e9m sv\u011bt\u011b je roz\u0161\u00ed\u0159en\u00e9 jeho u\u017e\u00edv\u00e1n\u00ed p\u0159i nespavosti a poruch\u00e1ch sp\u00e1nku. Uv\u00e1d\u00ed se, \u017ee melatonin u\u017e\u00edvaj\u00ed miliony Ameri\u010dan\u016f a Kana\u010fan\u016f. U n\u00e1s (a v EU) je dostupn\u00fd na l\u00e9ka\u0159sk\u00fd p\u0159edpis jako l\u00e9k Circadin pro kr\u00e1tkodobou l\u00e9\u010dbu nespavosti p\u0159edev\u0161\u00edm pro osoby nad 55 let. Jako voln\u011b prodejn\u00e9 se na trhu nov\u011b nab\u00edzej\u00ed v\u00a0posledn\u00edch letech dopl\u0148ky stravy s\u00a0obsahem melatoninu 1\u20135 mg v\u00a0jedn\u00e9 tablet\u011b. L\u00e9ka\u0159i doporu\u010duj\u00ed u\u017e\u00edvat melatonin asi hodinu p\u0159ed span\u00edm v\u00a0d\u00e1vce 1\u20133 mg.<br><strong>Melatonin podan\u00fd p\u0159ed us\u00edn\u00e1n\u00edm m\u016f\u017ee zkr\u00e1tit dobu us\u00edn\u00e1n\u00ed a\u00a0zlep\u0161it kvalitu sp\u00e1nku.<\/strong> Klinick\u00e9 studie ov\u011b\u0159ily, \u017ee melatonin navozuje p\u0159irozen\u00fd sp\u00e1nek, kter\u00fd p\u0159in\u00e1\u0161\u00ed osv\u011b\u017een\u00ed a\u00a0zlep\u0161en\u00ed v\u00fdkonnosti ve dne. Melatonin nen\u00ed toxick\u00fd a\u00a0je obecn\u011b dob\u0159e sn\u00e1\u0161en. Nevznik\u00e1 na n\u011bj z\u00e1vislost.<br>Regulace organismu sv\u011btlem funguje mnohem l\u00e9pe v\u00a0l\u00e9t\u011b, kdy je sv\u011btla dostatek. V\u00a0zimn\u00edm obdob\u00ed tak mohou m\u00edt lid\u00e9, p\u0159edev\u0161\u00edm ti s nepravideln\u00fdm \u017eivotn\u00edm rytmem, probl\u00e9my s\u00a0us\u00edn\u00e1n\u00edm. Citliv\u011bj\u0161\u00ed jedinci nekvalitn\u011b sp\u00ed, \u010dast\u011bji se probouzej\u00ed, a\u00a0p\u0159edev\u0161\u00edm nemohou usnout.<\/p>\n\n\n\n<p><strong>Melatonin u senior\u016f<\/strong><br>Schopnost tvorby melatoninu se s&nbsp;nar\u016fstaj\u00edc\u00edm v\u011bkem postupn\u011b sni\u017euje. Ve v\u011bku kolem pades\u00e1ti let je jeho produkce pouhou \u0161estinou produkce v d\u011btstv\u00ed. S&nbsp;postupuj\u00edc\u00edm v\u011bkem d\u00e1le kles\u00e1, a&nbsp;to je p\u0159\u00ed\u010dinnou \u010dast\u011bj\u0161\u00edho v\u00fdskytu poruch sp\u00e1nku u senior\u016f. Nedostatek odpo\u010dinku v&nbsp;noci nahrazuj\u00ed star\u0161\u00ed lid\u00e9 pod\u0159imov\u00e1n\u00edm ve dne. Ve\u010der se tak oddaluje doba, kdy by m\u011bli j\u00edt p\u0159irozen\u011b sp\u00e1t, doch\u00e1z\u00ed k&nbsp;naru\u0161en\u00ed biorytm\u016f, zhor\u0161ov\u00e1n\u00ed pam\u011bti, fyzick\u00e9 i&nbsp;psychick\u00e9 v\u00fdkonnosti. Pod\u00e1v\u00e1n\u00ed l\u00e9k\u016f na podporu sp\u00e1nku nen\u00ed u&nbsp;senior\u016f vhodn\u00e9. Jde zejm\u00e9na o&nbsp;klasick\u00e1 hypnotika nebo prepar\u00e1ty proti \u00fazkosti. Ob\u011b skupiny l\u00e9k\u016f zp\u016fsobuj\u00ed \u00fatlum mozku, a&nbsp;tak zvy\u0161uj\u00ed i&nbsp;riziko p\u00e1d\u016f a&nbsp;\u00faraz\u016f. Sp\u00e1nek pod jejich vlivem nen\u00ed p\u0159irozen\u00fd a&nbsp;m\u016f\u017ee postr\u00e1dat nejd\u016fle\u017eit\u011bj\u0161\u00ed hlubok\u00e1 stadia.<br>U\u017e\u00edv\u00e1-li se melatonin n\u011bkolik hodin p\u0159ed sp\u00e1nkem, m\u016f\u017ee posunout biologick\u00e9 hodiny a&nbsp;vytvo\u0159it prost\u0159ed\u00ed pro lep\u0161\u00ed us\u00edn\u00e1n\u00ed a&nbsp;probouzen\u00ed na \u010das. Optim\u00e1ln\u00ed d\u00e1vkov\u00e1n\u00ed spo\u010d\u00edv\u00e1 v pod\u00e1n\u00ed melatoninu asi 60 minut p\u0159ed span\u00edm v&nbsp;d\u00e1vce od 1 do 3 mg. &nbsp;Lze ho pod\u00e1vat v\u017edy n\u011bkolik dn\u00ed po sob\u011b, nebo dokonce i&nbsp;dlouhodob\u011b n\u011bkolik t\u00fddn\u016f. Z&nbsp;aplika\u010dn\u00edho hlediska je d\u016fle\u017eit\u00e9, \u017ee jej lze pod\u00e1vat s&nbsp;potravou, nap\u0159\u00edklad ve form\u011b n\u00e1poje. P\u0159ed span\u00edm je vhodn\u00e9 dod\u00e1vat t\u011blu pyridoxin (vitamin B6) v&nbsp;d\u00e1vce okolo 20\u201350 mg. Z&nbsp;miner\u00e1ln\u00edch l\u00e1tek je d\u016fle\u017eit\u00fd ho\u0159\u010d\u00edk (p\u0159ed span\u00edm 400 mg ho\u0159\u010d\u00edku).<br>Je t\u0159eba db\u00e1t na sp\u00e1nek v&nbsp;naprost\u00e9 tm\u011b, bez zapnut\u00fdch no\u010dn\u00edch lampi\u010dek a signaliza\u010dn\u00edch sv\u011bt\u00e9lek u r\u016fzn\u00fdch p\u0159\u00edstroj\u016f, televize a po\u010d\u00edta\u010d\u016f. V&nbsp;lo\u017enici bychom m\u011bli m\u00edt nepr\u016fsvitn\u00e9 z\u00e1v\u011bsy, kter\u00e9 br\u00e1n\u00ed osv\u011btlen\u00ed z&nbsp;ulice nebo i p\u016fsoben\u00ed sv\u011btla z&nbsp;m\u011bs\u00edce.<\/p>\n\n\n\n<p><strong>Melatonin proti st\u00e1rnut\u00ed<\/strong><br><strong>Melatonin z\u0159ejm\u011b dok\u00e1\u017ee omlazovat i\u00a0zpomalovat st\u00e1rnut\u00ed a posilovat imunitn\u00ed syst\u00e9m. Nav\u00edc je jedn\u00edm z\u00a0nejlep\u0161\u00edch antioxidant\u016f. P\u016fsob\u00ed zm\u011bny, kter\u00e9 sni\u017euj\u00ed vysok\u00fd krevn\u00ed tlak a\u00a0v\u00fdskyt kardiovaskul\u00e1rn\u00edch komplikac\u00ed. <\/strong>Je doporu\u010dov\u00e1n i\u00a0nemocn\u00fdm s\u00a0Alzheimerovou chorobou. Jeho dostate\u010dn\u00e1 tvorba je sou\u010dasn\u011b \u00fa\u010dinnou prevenc\u00ed rozvoje t\u00e9to ob\u00e1van\u00e9 nemoci senior\u016f. \u00a0Bez melatoninu i\u00a0mozek h\u016f\u0159e funguje, proto\u017ee rychleji st\u00e1rne a\u00a0snadn\u011bji se unav\u00ed.<\/p>\n\n\n\n<p><strong>Strava na podporu tvorby melatoninu<\/strong><br>Mno\u017estv\u00ed melatoninu m\u016f\u017eeme ovlivnit i\u00a0\u010d\u00e1ste\u010dn\u011b podporou jeho synt\u00e9zy p\u0159irozenou cestou z\u00a0n\u011bkter\u00fdch potravin rostlinn\u00e9ho p\u016fvodu, kter\u00e9 obsahuj\u00ed aminokyselinu tryptofan. Tryptofan je d\u016fle\u017eit\u00fd pro synt\u00e9zu serotoninu, melatoninu a vitaminu B3 \u2013 niacinu. Zdrojem tryptofanu jsou nap\u0159. ovesn\u00e9 vlo\u010dky, datle, s\u00f3jov\u00fd s\u00fdr tofu, s\u00fdr Cottage, dr\u016fbe\u017e, mandle, slune\u010dnicov\u00e1 a d\u00fd\u0148ov\u00e1 sem\u00ednka, sezam. Tak\u00e9 ban\u00e1ny obsahuj\u00ed aminokyselinu tryptofan a krom\u011b toho jsou i bohat\u00fdm zdrojem ho\u0159\u010d\u00edku.<br><strong>Ke zvy\u0161ov\u00e1n\u00ed hladiny melatoninu mohou pom\u00e1hat vi\u0161n\u011b, kter\u00e9 jsou zdrojem p\u0159irozen\u00e9ho melatoninu. V sezon\u011b vi\u0161n\u00ed by se m\u011bly j\u00edst asi hodinu p\u0159ed pl\u00e1novan\u00fdm usnut\u00edm<\/strong>. Mimo sezonu je mo\u017en\u00e9 konzumovat vi\u0161\u0148ovou \u0161\u0165\u00e1vu, mrazen\u00e9 nebo su\u0161en\u00e9 vi\u0161n\u011b, eventu\u00e1ln\u011b dom\u00e1c\u00ed vi\u0161\u0148ovku. P\u0159i v\u00e1\u017en\u00fdch poruch\u00e1ch sp\u00e1nku se doporu\u010duje 30 ml vi\u0161\u0148ov\u00e9 \u0161\u0165\u00e1vy (z 90\u2013100 syrov\u00fdch vi\u0161n\u00ed) z\u0159edit do 200 ml vody a vyp\u00edt p\u0159ed span\u00edm.<br>Na internetu se opakovan\u011b uv\u00e1d\u00ed, \u017ee \u00fapln\u011b nejvy\u0161\u0161\u00ed mno\u017estv\u00ed melatoninu mezi rostlinami obsahuje tr\u00e1va kost\u0159ava r\u00e1kosovit\u00e1 (<em>Festuca arundinacea<\/em>), kter\u00e1 roste na britsk\u00fdch ostrovech a u\u017e\u00edv\u00e1 se ke krmen\u00ed dobytka. <strong>Kost\u0159avy<\/strong>\u00a0jsou tr\u00e1vy tak star\u00e9, \u017ee pamatuj\u00ed dinosaury. U n\u00e1s se na louk\u00e1ch setk\u00e1v\u00e1me s\u00a0jin\u00fdmi druhy t\u011bchto such\u00fdch trav a mnoh\u00e9 se p\u011bstuj\u00ed pro ozdobu na zahr\u00e1dk\u00e1ch a skalk\u00e1ch. Zaj\u00edmalo m\u011b proto, pro\u010d pr\u00e1v\u011b kost\u0159ava obsahuje hodn\u011b melatoninu. \u017de by snad kv\u016fli fungov\u00e1n\u00ed 3. oka dinosaur\u016f? \u00a0Av\u0161ak podle m\u00e9ho vyhled\u00e1v\u00e1n\u00ed ve v\u011bdeck\u00e9 literatu\u0159e jsem zjistila, \u017ee mnohem v\u00edc melatoninu ne\u017e kost\u0159ava obsahuj\u00ed semena ho\u0159\u010dice, fenyklu, a dokonce i slune\u010dnice a kuku\u0159ice (11). Zat\u00edmco semena (nikoliv bylinn\u00e1 \u010d\u00e1st) kost\u0159avy obsahuj\u00ed 5 ng melatoninu \/g, listy \u0159imbaby obecn\u00e9 (<em>Tanacetum parthenium<\/em>) maj\u00ed 2\u00a0450 ng melatoninu \/g, kv\u011bty t\u0159ezalky dokonce 4 390 ng\/g. Nanogram je tis\u00edcina mikrogramu a mikrogram je tis\u00edcina mg (1 ng = 0,000 001 mg). K\u00a0tomu, abychom p\u0159ijali 1 mg melatoninu, museli bychom sn\u00edst 41 dkg list\u016f \u0159imbaby nebo alespo\u0148 20 dkg kv\u011bt\u016f t\u0159ezalky. A v\u00a0p\u0159\u00edpad\u011b doporu\u010dovan\u00e9 kost\u0159avy (10) bychom museli p\u0159ed span\u00edm zkonzumovat 200 kg jej\u00edch semen! Ale nejsme dinosau\u0159i.<br>\u00dadaje o vysok\u00e9m obsahu melatoninu v\u00a0kost\u0159av\u011b r\u00e1kosovit\u00e9 z\u0159ejm\u011b r\u016fzn\u00ed auto\u0159i na internetu v\u00a0\u010de\u0161tin\u011b i angli\u010dtin\u011b opisuj\u00ed, jako tomu bylo ve zn\u00e1m\u00e9m p\u0159\u00edpad\u011b vysok\u00e9ho obsahu \u017eeleza ve \u0161pen\u00e1tu.\u00a0 Po letech, kdy matky \u010dasto nutily d\u011bti j\u00edst \u0161pen\u00e1t jako nejlep\u0161\u00ed zdroj \u017eeleza, se zjistilo, \u017ee do\u0161lo k\u00a0chyb\u011b v\u00a0desetinn\u00e9 \u010d\u00e1rce a obsah \u017eeleza ve \u0161pen\u00e1tu je ve skute\u010dnosti desetkr\u00e1t ni\u017e\u0161\u00ed.\u00a0<br>Ze 44 druh\u016f ovoce, ve kter\u00e9m byl m\u011b\u0159en obsah melatoninu, byl nalezen vy\u0161\u0161\u00ed obsah melatoninu (18 ng\/g) pouze ve vi\u0161n\u00edch, ostatn\u00ed plody maj\u00ed obsah melatoninu vzhledem k\u00a0lidsk\u00e9 v\u00fd\u017eiv\u011b zcela zanedbateln\u00fd (0,01 \u20131 ng\/g).<br>Nemysleme si v\u0161ak, \u017ee v na\u0161em t\u011ble vznik\u00e1 denn\u011b alespo\u0148 10 dkg melatoninu! I ta doporu\u010dovan\u00e1 terapeutick\u00e1 mno\u017estv\u00ed 1\u20135 mg jsou vysok\u00e1 s\u00a0ohledem na to, \u017ee v\u0161echen p\u0159ijat\u00fd melatonin se ve st\u0159evech nevst\u0159eb\u00e1. Podle \u00fadaj\u016f v\u00a0odborn\u00e9 literatu\u0159e mu\u017e produkuje v\u00a0noci 4,6 <a>\u00b5g melatoninu za hodinu<\/a>, tak\u017ee za 8 hodin sp\u00e1nku ve tm\u011b by to m\u011blo b\u00fdt 0,037 mg. \u017densk\u00e9 t\u011blo produkuje 2,8 \u00b5g melatoninu za hodinu, tak\u017ee za 8 hodin 0,022 mg.<br>Tak\u017ee kontrolujme doporu\u010den\u00ed (i odborn\u00edk\u016f) na internetu zdrav\u00fdm rozumem a kupeck\u00fdmi po\u010dty! Babi\u010dk\u00e1m dejme pro lep\u0161\u00ed us\u00edn\u00e1n\u00ed stopku vi\u0161\u0148ovky a p\u016fl tablety melatoninu a dbejme na klidn\u00fd sp\u00e1nek v\u00a0naprost\u00e9 tm\u011b.<br>A pokud by n\u011bkter\u00fd \u010dten\u00e1\u0159 cht\u011bl informace o l\u00e9\u010div\u00fdch bylin\u00e1ch, kter\u00e9 pom\u00e1haj\u00ed p\u0159i us\u00edn\u00e1n\u00ed, pak \u00a0odkazujeme na na\u0161i kn\u00ed\u017eku <em>L\u00e9\u010div\u00e9 byliny a du\u0161evn\u00ed zdrav\u00ed<\/em> (12).\u00a0\u00a0\u00a0<\/p>\n\n\n\n<p><strong>Melatonin a rakovina<\/strong><br>V\u00edce ne\u017e 2\u00a0500 v\u011bdeck\u00fdch studi\u00ed p\u0159in\u00e1\u0161\u00ed v\u00fdsledky o tom, \u017ee melatonin m\u00e1 d\u016fle\u017eitou roli v\u00a0prevenci r\u016fstu rakovinov\u00fdch bun\u011bk. Onkostatick\u00e9 \u00fa\u010dinky jsou vyvolan\u00e9 jak jeho vlivem na slo\u017eitou \u010dinnost imunitn\u00edho syst\u00e9mu, tak jeho p\u0159\u00edmou inhibic\u00ed bun\u011b\u010dn\u00e9ho d\u011blen\u00ed a antioxida\u010dn\u00edm p\u016fsoben\u00edm (13, 14). P\u0159esn\u00e9 mechanismy na molekul\u00e1rn\u00ed a bun\u011b\u010dn\u00e9 \u00farovni nejsou zn\u00e1m\u00e9 a tis\u00edce badatel\u016f usiluj\u00ed o odhalen\u00ed tohoto tajemstv\u00ed.\u00a0 Jist\u00e9 je, \u017ee melatonin p\u0159edstavuje nejsiln\u011bj\u0161\u00ed ochranu lidsk\u00e9ho t\u011bla p\u0159ed vznikem zhoubn\u00fdch n\u00e1dor\u016f. <strong>Melatonin je toti\u017e vedle glutationu nejsiln\u011bj\u0161\u00ed antioxidant vznikaj\u00edc\u00ed v\u00a0lidsk\u00e9m t\u011ble<\/strong>. I z\u00a0t\u011bchto d\u016fvod\u016f je proto vysoce \u017e\u00e1douc\u00ed pe\u010dovat o optim\u00e1ln\u00ed tvorbu melatoninu v\u00a0\u0161i\u0161ince.<br>Krom\u011b protirakovinn\u00e9ho p\u016fsoben\u00ed melatoninu p\u0159\u00edmo na bu\u0148ky se zjistilo, \u017ee pod\u00e1v\u00e1n\u00ed melatoninu zlep\u0161uje terapeutickou \u00fa\u010dinnost chemoterapie a zm\u00edr\u0148uje jej\u00ed toxicitu.<br>Dostate\u010dn\u011b p\u0159esv\u011bd\u010div\u011b se ukazuje, \u017ee melatonin m\u00e1 l\u00e9\u010debn\u00e9 \u00fa\u010dinky u rakoviny prsu, d\u011blohy (endometria), prostaty, vaje\u010dn\u00edk\u016f, st\u0159eva a jater. \u00cdr\u00e1n\u0161t\u00ed gynekologov\u00e9 a onkologov\u00e9 na konci roku 2019 ozn\u00e1mili, \u017ee melatonin byl \u00fasp\u011b\u0161n\u00fd p\u0159i l\u00e9\u010den\u00ed rakoviny d\u011blo\u017en\u00edho hrdla.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Na\u0161e spolupracovnice a v\u00e1\u017een\u00e1 autorka, v\u011bdkyn\u011b prof. RNDr. Anna Struneck\u00e1, DrSc., obohatila p\u0159ed \u010dasem medu\u0148kovou edici zaj\u00edmav\u00fdch knih ( www.knihovnickamedunky.cz) o pozoruhodn\u00fd titul s n\u00e1zvem \u0160i\u0161inka Okno do bo\u017e\u00edho internetu. T\u00e9matem funkce \u0161i\u0161inky se zab\u00fdvala v r\u00e1mci svoj\u00ed dlouholet\u00e9 badatelsk\u00e9 a pedagogick\u00e9 \u010dinnosti na Univerzit\u011b Karlov\u011b v Praze. V knize p\u0159edest\u00edr\u00e1 \u0161irok\u00e9 a ne\u010dekan\u00e9 souvislosti a p\u0159edkl\u00e1d\u00e1 p\u0159ed vn\u00edmav\u00e9ho \u010dten\u00e1\u0159e mnoh\u00e1 tajemstv\u00ed, kter\u00e1 v u\u010debnic\u00edch nenajdete. Z knihy vyb\u00edr\u00e1me \u010d\u00e1st kapitoly v\u011bnovan\u00e9 melatoninu &#8211; tak\u0159ka &#8222;z\u00e1zra\u010dn\u00e9mu&#8220; hormonu, kter\u00fd v\u00fdznamn\u011b ovliv\u0148uje nejen sp\u00e1nek, ale i celkov\u00e9 zdrav\u00ed \u010dlov\u011bka&#8230; Hlavn\u00ed hormon \u0161i\u0161inky melatonin je v\u00a0posledn\u00edch dek\u00e1d\u00e1ch v\u00a0centru pozornosti des\u00edtek badatel\u016f i farmaceutick\u00fdch firem, proto\u017ee m\u00e1 dalekos\u00e1hl\u00e9 \u00fa\u010dinky na stav cel\u00e9ho organismu. Laboratorn\u00ed studie i klinick\u00e9 zku\u0161enosti ukazuj\u00ed, \u017ee ovliv\u0148uje sp\u00e1nek, ob\u011bh krve, krevn\u00ed tlak, t\u011blesnou teplotu, metabolismus cukr\u016f, tuk\u016f i b\u00edlkovin. Ovliv\u0148uje produkci pohlavn\u00edch hormon\u016f, imunologick\u00e9 reakce organismu, pr\u016fb\u011bh st\u00e1rnut\u00ed, chov\u00e1n\u00ed i psychologick\u00e9 reakce. Na z\u00e1klad\u011b n\u011bkter\u00fdch laboratorn\u00edch n\u00e1lez\u016f za\u010dal b\u00fdt melatonin prezentov\u00e1n ve v\u011bdeck\u00e9m i bulv\u00e1rn\u00edm tisku jako t\u00e9m\u011b\u0159 z\u00e1zra\u010dn\u00fd hormon ovliv\u0148uj\u00edc\u00ed st\u00e1rnut\u00ed, n\u00e1dorov\u00e1 onemocn\u011bn\u00ed a imunitu. Za nejv\u00fdznamn\u011bj\u0161\u00ed jsou pova\u017eov\u00e1ny jeho synchroniza\u010dn\u00ed, imunostimula\u010dn\u00ed a antioxida\u010dn\u00ed \u00fa\u010dinky.Experiment\u00e1ln\u011b a dobrovoln\u011b po\u017e\u00edvali melatonin i \u00fa\u010dastn\u00edci sv\u011btov\u00e9ho fyziologick\u00e9ho kongresu v\u00a0Austr\u00e1lii, aby pomohli p\u0159i ov\u011b\u0159ov\u00e1n\u00ed \u00fa\u010dink\u016f melatoninu p\u0159i odstra\u0148ov\u00e1n\u00ed tzv. jet lag symptom\u016f \u2013 p\u0159echodn\u00e9ho zhroucen\u00ed biologick\u00fdch rytm\u016f zp\u016fsoben\u00e9ho p\u0159eletem n\u011bkolika \u010dasov\u00fdch p\u00e1sem (osobn\u00ed zku\u0161enost). Melatonin se pod\u00edl\u00ed i\u00a0na regulaci celoro\u010dn\u00edho rytmu, tj. st\u0159\u00edd\u00e1n\u00ed obdob\u00ed l\u00e9ta a\u00a0zimy. Melatonin a sp\u00e1nekU\u00a0\u010dlov\u011bka m\u00e1 melatonin vliv na cel\u00fd hypotalamo-hypofyz\u00e1rn\u00ed syst\u00e9m a\u00a0vzestup jeho hladiny je spojen se zv\u00fd\u0161en\u00fdm nutk\u00e1n\u00edm ke sp\u00e1nku. B\u00fdv\u00e1 proto naz\u00fdv\u00e1n sp\u00e1nkov\u00fdm hormonem. Po cel\u00e9m sv\u011bt\u011b je roz\u0161\u00ed\u0159en\u00e9 jeho u\u017e\u00edv\u00e1n\u00ed p\u0159i nespavosti a poruch\u00e1ch sp\u00e1nku. Uv\u00e1d\u00ed se, \u017ee melatonin u\u017e\u00edvaj\u00ed miliony Ameri\u010dan\u016f a Kana\u010fan\u016f. U n\u00e1s (a v EU) je dostupn\u00fd na l\u00e9ka\u0159sk\u00fd p\u0159edpis jako l\u00e9k Circadin pro kr\u00e1tkodobou l\u00e9\u010dbu nespavosti p\u0159edev\u0161\u00edm pro osoby nad 55 let. Jako voln\u011b prodejn\u00e9 se na trhu nov\u011b nab\u00edzej\u00ed v\u00a0posledn\u00edch letech dopl\u0148ky stravy s\u00a0obsahem melatoninu 1\u20135 mg v\u00a0jedn\u00e9 tablet\u011b. L\u00e9ka\u0159i doporu\u010duj\u00ed u\u017e\u00edvat melatonin asi hodinu p\u0159ed span\u00edm v\u00a0d\u00e1vce 1\u20133 mg.Melatonin podan\u00fd p\u0159ed us\u00edn\u00e1n\u00edm m\u016f\u017ee zkr\u00e1tit dobu us\u00edn\u00e1n\u00ed a\u00a0zlep\u0161it kvalitu sp\u00e1nku. Klinick\u00e9 studie ov\u011b\u0159ily, \u017ee melatonin navozuje p\u0159irozen\u00fd sp\u00e1nek, kter\u00fd p\u0159in\u00e1\u0161\u00ed osv\u011b\u017een\u00ed a\u00a0zlep\u0161en\u00ed v\u00fdkonnosti ve dne. Melatonin nen\u00ed toxick\u00fd a\u00a0je obecn\u011b dob\u0159e sn\u00e1\u0161en. Nevznik\u00e1 na n\u011bj z\u00e1vislost.Regulace organismu sv\u011btlem funguje mnohem l\u00e9pe v\u00a0l\u00e9t\u011b, kdy je sv\u011btla dostatek. V\u00a0zimn\u00edm obdob\u00ed tak mohou m\u00edt lid\u00e9, p\u0159edev\u0161\u00edm ti s nepravideln\u00fdm \u017eivotn\u00edm rytmem, probl\u00e9my s\u00a0us\u00edn\u00e1n\u00edm. Citliv\u011bj\u0161\u00ed jedinci nekvalitn\u011b sp\u00ed, \u010dast\u011bji se probouzej\u00ed, a\u00a0p\u0159edev\u0161\u00edm nemohou usnout. Melatonin u senior\u016fSchopnost tvorby melatoninu se s&nbsp;nar\u016fstaj\u00edc\u00edm v\u011bkem postupn\u011b sni\u017euje. Ve v\u011bku kolem pades\u00e1ti let je jeho produkce pouhou \u0161estinou produkce v d\u011btstv\u00ed. S&nbsp;postupuj\u00edc\u00edm v\u011bkem d\u00e1le kles\u00e1, a&nbsp;to je p\u0159\u00ed\u010dinnou \u010dast\u011bj\u0161\u00edho v\u00fdskytu poruch sp\u00e1nku u senior\u016f. Nedostatek odpo\u010dinku v&nbsp;noci nahrazuj\u00ed star\u0161\u00ed lid\u00e9 pod\u0159imov\u00e1n\u00edm ve dne. Ve\u010der se tak oddaluje doba, kdy by m\u011bli j\u00edt p\u0159irozen\u011b sp\u00e1t, doch\u00e1z\u00ed k&nbsp;naru\u0161en\u00ed biorytm\u016f, zhor\u0161ov\u00e1n\u00ed pam\u011bti, fyzick\u00e9 i&nbsp;psychick\u00e9 v\u00fdkonnosti. Pod\u00e1v\u00e1n\u00ed l\u00e9k\u016f na podporu sp\u00e1nku nen\u00ed u&nbsp;senior\u016f vhodn\u00e9. Jde zejm\u00e9na o&nbsp;klasick\u00e1 hypnotika nebo prepar\u00e1ty proti \u00fazkosti. Ob\u011b skupiny l\u00e9k\u016f zp\u016fsobuj\u00ed \u00fatlum mozku, a&nbsp;tak zvy\u0161uj\u00ed i&nbsp;riziko p\u00e1d\u016f a&nbsp;\u00faraz\u016f. Sp\u00e1nek pod jejich vlivem nen\u00ed p\u0159irozen\u00fd a&nbsp;m\u016f\u017ee postr\u00e1dat nejd\u016fle\u017eit\u011bj\u0161\u00ed hlubok\u00e1 stadia.U\u017e\u00edv\u00e1-li se melatonin n\u011bkolik hodin p\u0159ed sp\u00e1nkem, m\u016f\u017ee posunout biologick\u00e9 hodiny a&nbsp;vytvo\u0159it prost\u0159ed\u00ed pro lep\u0161\u00ed us\u00edn\u00e1n\u00ed a&nbsp;probouzen\u00ed na \u010das. Optim\u00e1ln\u00ed d\u00e1vkov\u00e1n\u00ed spo\u010d\u00edv\u00e1 v pod\u00e1n\u00ed melatoninu asi 60 minut p\u0159ed span\u00edm v&nbsp;d\u00e1vce od 1 do 3 mg. &nbsp;Lze ho pod\u00e1vat v\u017edy n\u011bkolik dn\u00ed po sob\u011b, nebo dokonce i&nbsp;dlouhodob\u011b n\u011bkolik t\u00fddn\u016f. Z&nbsp;aplika\u010dn\u00edho hlediska je d\u016fle\u017eit\u00e9, \u017ee jej lze pod\u00e1vat s&nbsp;potravou, nap\u0159\u00edklad ve form\u011b n\u00e1poje. P\u0159ed span\u00edm je vhodn\u00e9 dod\u00e1vat t\u011blu pyridoxin (vitamin B6) v&nbsp;d\u00e1vce okolo 20\u201350 mg. Z&nbsp;miner\u00e1ln\u00edch l\u00e1tek je d\u016fle\u017eit\u00fd ho\u0159\u010d\u00edk (p\u0159ed span\u00edm 400 mg ho\u0159\u010d\u00edku).Je t\u0159eba db\u00e1t na sp\u00e1nek v&nbsp;naprost\u00e9 tm\u011b, bez zapnut\u00fdch no\u010dn\u00edch lampi\u010dek a signaliza\u010dn\u00edch sv\u011bt\u00e9lek u r\u016fzn\u00fdch p\u0159\u00edstroj\u016f, televize a po\u010d\u00edta\u010d\u016f. V&nbsp;lo\u017enici bychom m\u011bli m\u00edt nepr\u016fsvitn\u00e9 z\u00e1v\u011bsy, kter\u00e9 br\u00e1n\u00ed osv\u011btlen\u00ed z&nbsp;ulice nebo i p\u016fsoben\u00ed sv\u011btla z&nbsp;m\u011bs\u00edce. Melatonin proti st\u00e1rnut\u00edMelatonin z\u0159ejm\u011b dok\u00e1\u017ee omlazovat i\u00a0zpomalovat st\u00e1rnut\u00ed a posilovat imunitn\u00ed syst\u00e9m. Nav\u00edc je jedn\u00edm z\u00a0nejlep\u0161\u00edch antioxidant\u016f. P\u016fsob\u00ed zm\u011bny, kter\u00e9 sni\u017euj\u00ed vysok\u00fd krevn\u00ed tlak a\u00a0v\u00fdskyt kardiovaskul\u00e1rn\u00edch komplikac\u00ed. Je doporu\u010dov\u00e1n i\u00a0nemocn\u00fdm s\u00a0Alzheimerovou chorobou. Jeho dostate\u010dn\u00e1 tvorba je sou\u010dasn\u011b \u00fa\u010dinnou prevenc\u00ed rozvoje t\u00e9to ob\u00e1van\u00e9 nemoci senior\u016f. \u00a0Bez melatoninu i\u00a0mozek h\u016f\u0159e funguje, proto\u017ee rychleji st\u00e1rne a\u00a0snadn\u011bji se unav\u00ed. Strava na podporu tvorby melatoninuMno\u017estv\u00ed melatoninu m\u016f\u017eeme ovlivnit i\u00a0\u010d\u00e1ste\u010dn\u011b podporou jeho synt\u00e9zy p\u0159irozenou cestou z\u00a0n\u011bkter\u00fdch potravin rostlinn\u00e9ho p\u016fvodu, kter\u00e9 obsahuj\u00ed aminokyselinu tryptofan. Tryptofan je d\u016fle\u017eit\u00fd pro synt\u00e9zu serotoninu, melatoninu a vitaminu B3 \u2013 niacinu. Zdrojem tryptofanu jsou nap\u0159. ovesn\u00e9 vlo\u010dky, datle, s\u00f3jov\u00fd s\u00fdr tofu, s\u00fdr Cottage, dr\u016fbe\u017e, mandle, slune\u010dnicov\u00e1 a d\u00fd\u0148ov\u00e1 sem\u00ednka, sezam. Tak\u00e9 ban\u00e1ny obsahuj\u00ed aminokyselinu tryptofan a krom\u011b toho jsou i bohat\u00fdm zdrojem ho\u0159\u010d\u00edku.Ke zvy\u0161ov\u00e1n\u00ed hladiny melatoninu mohou pom\u00e1hat vi\u0161n\u011b, kter\u00e9 jsou zdrojem p\u0159irozen\u00e9ho melatoninu. V sezon\u011b vi\u0161n\u00ed by se m\u011bly j\u00edst asi hodinu p\u0159ed pl\u00e1novan\u00fdm usnut\u00edm. Mimo sezonu je mo\u017en\u00e9 konzumovat vi\u0161\u0148ovou \u0161\u0165\u00e1vu, mrazen\u00e9 nebo su\u0161en\u00e9 vi\u0161n\u011b, eventu\u00e1ln\u011b dom\u00e1c\u00ed vi\u0161\u0148ovku. P\u0159i v\u00e1\u017en\u00fdch poruch\u00e1ch sp\u00e1nku se doporu\u010duje 30 ml vi\u0161\u0148ov\u00e9 \u0161\u0165\u00e1vy (z 90\u2013100 syrov\u00fdch vi\u0161n\u00ed) z\u0159edit do 200 ml vody a vyp\u00edt p\u0159ed span\u00edm.Na internetu se opakovan\u011b uv\u00e1d\u00ed, \u017ee \u00fapln\u011b nejvy\u0161\u0161\u00ed mno\u017estv\u00ed melatoninu mezi rostlinami obsahuje tr\u00e1va kost\u0159ava r\u00e1kosovit\u00e1 (Festuca arundinacea), kter\u00e1 roste na britsk\u00fdch ostrovech a u\u017e\u00edv\u00e1 se ke krmen\u00ed dobytka. Kost\u0159avy\u00a0jsou tr\u00e1vy tak star\u00e9, \u017ee pamatuj\u00ed dinosaury. U n\u00e1s se na louk\u00e1ch setk\u00e1v\u00e1me s\u00a0jin\u00fdmi druhy t\u011bchto such\u00fdch trav a mnoh\u00e9 se p\u011bstuj\u00ed pro ozdobu na zahr\u00e1dk\u00e1ch a skalk\u00e1ch. Zaj\u00edmalo m\u011b proto, pro\u010d pr\u00e1v\u011b kost\u0159ava obsahuje hodn\u011b melatoninu. \u017de by snad kv\u016fli fungov\u00e1n\u00ed 3. oka dinosaur\u016f? \u00a0Av\u0161ak podle m\u00e9ho vyhled\u00e1v\u00e1n\u00ed ve v\u011bdeck\u00e9 literatu\u0159e jsem zjistila, \u017ee mnohem v\u00edc melatoninu ne\u017e kost\u0159ava obsahuj\u00ed semena ho\u0159\u010dice, fenyklu, a dokonce i slune\u010dnice a kuku\u0159ice (11). Zat\u00edmco semena (nikoliv bylinn\u00e1 \u010d\u00e1st) kost\u0159avy obsahuj\u00ed 5 ng melatoninu \/g, listy \u0159imbaby obecn\u00e9 (Tanacetum parthenium) maj\u00ed 2\u00a0450 ng melatoninu \/g, kv\u011bty t\u0159ezalky dokonce 4 390 ng\/g. Nanogram je tis\u00edcina mikrogramu a mikrogram je tis\u00edcina mg (1 ng = 0,000 001 mg). K\u00a0tomu, abychom p\u0159ijali 1 mg melatoninu, museli bychom sn\u00edst 41 dkg list\u016f \u0159imbaby nebo alespo\u0148 20 dkg kv\u011bt\u016f t\u0159ezalky. A v\u00a0p\u0159\u00edpad\u011b doporu\u010dovan\u00e9 kost\u0159avy (10) bychom museli p\u0159ed span\u00edm zkonzumovat 200 kg jej\u00edch semen! Ale nejsme dinosau\u0159i.\u00dadaje o vysok\u00e9m obsahu melatoninu v\u00a0kost\u0159av\u011b r\u00e1kosovit\u00e9 z\u0159ejm\u011b r\u016fzn\u00ed auto\u0159i na internetu v\u00a0\u010de\u0161tin\u011b i angli\u010dtin\u011b opisuj\u00ed, jako tomu bylo ve zn\u00e1m\u00e9m p\u0159\u00edpad\u011b vysok\u00e9ho obsahu \u017eeleza ve \u0161pen\u00e1tu.\u00a0 Po letech, kdy matky \u010dasto nutily d\u011bti j\u00edst \u0161pen\u00e1t jako nejlep\u0161\u00ed zdroj \u017eeleza, se zjistilo, \u017ee do\u0161lo k\u00a0chyb\u011b v\u00a0desetinn\u00e9 \u010d\u00e1rce a obsah \u017eeleza ve \u0161pen\u00e1tu je ve skute\u010dnosti desetkr\u00e1t ni\u017e\u0161\u00ed.\u00a0Ze 44 druh\u016f ovoce, ve kter\u00e9m byl m\u011b\u0159en obsah melatoninu, byl nalezen vy\u0161\u0161\u00ed obsah melatoninu (18 ng\/g) pouze ve vi\u0161n\u00edch, ostatn\u00ed plody maj\u00ed obsah melatoninu vzhledem k\u00a0lidsk\u00e9 v\u00fd\u017eiv\u011b zcela zanedbateln\u00fd (0,01 \u20131 ng\/g).Nemysleme si v\u0161ak, \u017ee v na\u0161em t\u011ble vznik\u00e1 denn\u011b alespo\u0148 10 dkg melatoninu! I ta doporu\u010dovan\u00e1 terapeutick\u00e1 mno\u017estv\u00ed 1\u20135 mg jsou vysok\u00e1 s\u00a0ohledem na to, \u017ee v\u0161echen p\u0159ijat\u00fd melatonin se ve st\u0159evech nevst\u0159eb\u00e1. Podle \u00fadaj\u016f v\u00a0odborn\u00e9 literatu\u0159e mu\u017e produkuje v\u00a0noci 4,6 \u00b5g melatoninu za hodinu, tak\u017ee za 8 hodin sp\u00e1nku ve tm\u011b by to m\u011blo b\u00fdt 0,037 mg. \u017densk\u00e9 t\u011blo produkuje 2,8 \u00b5g melatoninu za hodinu, tak\u017ee za 8 hodin 0,022 mg.Tak\u017ee kontrolujme doporu\u010den\u00ed (i odborn\u00edk\u016f) na internetu zdrav\u00fdm rozumem a kupeck\u00fdmi po\u010dty! Babi\u010dk\u00e1m dejme pro lep\u0161\u00ed us\u00edn\u00e1n\u00ed stopku vi\u0161\u0148ovky a p\u016fl tablety melatoninu a dbejme na klidn\u00fd sp\u00e1nek v\u00a0naprost\u00e9 tm\u011b.A pokud by n\u011bkter\u00fd \u010dten\u00e1\u0159 cht\u011bl informace o l\u00e9\u010div\u00fdch bylin\u00e1ch, kter\u00e9 pom\u00e1haj\u00ed p\u0159i us\u00edn\u00e1n\u00ed, pak \u00a0odkazujeme na na\u0161i kn\u00ed\u017eku L\u00e9\u010div\u00e9 byliny a du\u0161evn\u00ed zdrav\u00ed (12).\u00a0\u00a0\u00a0 Melatonin a rakovinaV\u00edce ne\u017e 2\u00a0500 v\u011bdeck\u00fdch studi\u00ed p\u0159in\u00e1\u0161\u00ed v\u00fdsledky o tom, \u017ee melatonin m\u00e1 d\u016fle\u017eitou roli v\u00a0prevenci r\u016fstu rakovinov\u00fdch bun\u011bk. Onkostatick\u00e9 \u00fa\u010dinky jsou vyvolan\u00e9 jak jeho vlivem na slo\u017eitou \u010dinnost imunitn\u00edho syst\u00e9mu, tak jeho p\u0159\u00edmou inhibic\u00ed bun\u011b\u010dn\u00e9ho d\u011blen\u00ed a antioxida\u010dn\u00edm p\u016fsoben\u00edm (13, 14). P\u0159esn\u00e9 mechanismy na molekul\u00e1rn\u00ed a bun\u011b\u010dn\u00e9 \u00farovni nejsou zn\u00e1m\u00e9 a tis\u00edce badatel\u016f usiluj\u00ed o odhalen\u00ed tohoto tajemstv\u00ed.\u00a0 Jist\u00e9 je, \u017ee melatonin p\u0159edstavuje nejsiln\u011bj\u0161\u00ed ochranu lidsk\u00e9ho t\u011bla p\u0159ed vznikem zhoubn\u00fdch n\u00e1dor\u016f. Melatonin je toti\u017e vedle glutationu nejsiln\u011bj\u0161\u00ed antioxidant vznikaj\u00edc\u00ed v\u00a0lidsk\u00e9m t\u011ble. I z\u00a0t\u011bchto d\u016fvod\u016f je proto vysoce \u017e\u00e1douc\u00ed pe\u010dovat o optim\u00e1ln\u00ed tvorbu melatoninu v\u00a0\u0161i\u0161ince.Krom\u011b protirakovinn\u00e9ho p\u016fsoben\u00ed melatoninu p\u0159\u00edmo na bu\u0148ky se zjistilo, \u017ee pod\u00e1v\u00e1n\u00ed melatoninu zlep\u0161uje terapeutickou \u00fa\u010dinnost chemoterapie a zm\u00edr\u0148uje jej\u00ed toxicitu.Dostate\u010dn\u011b p\u0159esv\u011bd\u010div\u011b se ukazuje, \u017ee melatonin m\u00e1 l\u00e9\u010debn\u00e9 \u00fa\u010dinky u rakoviny prsu, d\u011blohy (endometria), prostaty, vaje\u010dn\u00edk\u016f, st\u0159eva a jater. \u00cdr\u00e1n\u0161t\u00ed gynekologov\u00e9 a onkologov\u00e9 na konci roku 2019 ozn\u00e1mili, \u017ee melatonin byl \u00fasp\u011b\u0161n\u00fd p\u0159i l\u00e9\u010den\u00ed rakoviny d\u011blo\u017en\u00edho hrdla.\u00a0<\/p>\n","protected":false},"author":3,"featured_media":2995,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,1,31],"tags":[],"class_list":["post-9492","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knihovnicka-medunky","category-medunka","category-pro-inspiraci"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/posts\/9492","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/comments?post=9492"}],"version-history":[{"count":5,"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/posts\/9492\/revisions"}],"predecessor-version":[{"id":9499,"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/posts\/9492\/revisions\/9499"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/media\/2995"}],"wp:attachment":[{"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/media?parent=9492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/categories?post=9492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mojemedunka.cz\/index.php\/wp-json\/wp\/v2\/tags?post=9492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}