S rychl\u00fdm n\u00e1stupem bezd\u00fdmn\u00fdch alternativ, jako jsou Zyn, VELO a On!, si nikotinov\u00e9 s\u00e1\u010dky na\u0161ly velkou oblibu mezi dosp\u011bl\u00fdmi, kte\u0159\u00ed se sna\u017e\u00ed vyhnout cigaret\u00e1m a vapingu. Rostouc\u00ed obavy - zejm\u00e9na mezi mu\u017ei v reproduk\u010dn\u00edm v\u011bku - v\u0161ak vyvol\u00e1v\u00e1 ot\u00e1zka, zda nikotinov\u00e9 s\u00e1\u010dky nemohou ovlivnit mu\u017eskou plodnost. I kdy\u017e jsou tyto v\u00fdrobky uv\u00e1d\u011bny na trh jako \u201c\u010dist\u0161\u00ed\u201d alternativy, znamen\u00e1 to, \u017ee jsou bez rizika pro reproduk\u010dn\u00ed zdrav\u00ed?<\/p>\n\n\n\n
V tomto \u010dl\u00e1nku se podrobn\u011b pod\u00edv\u00e1me na sou\u010dasn\u00e9 v\u011bdeck\u00e9 poznatky o tom, jak nikotin - a tedy i nikotinov\u00e9 s\u00e1\u010dky - m\u016f\u017ee ovlivnit zdrav\u00ed spermi\u00ed, hladinu testosteronu a celkovou plodnost mu\u017e\u016f.<\/p>\n\n\n\n
Nikotinov\u00e9 s\u00e1\u010dky jsou mal\u00e9 neku\u0159\u00e1ck\u00e9 v\u00fdrobky um\u00edst\u011bn\u00e9 mezi d\u00e1sn\u00ed a horn\u00edm rtem. Na rozd\u00edl od tradi\u010dn\u00edho \u0161\u0148upac\u00edho tab\u00e1ku neobsahuj\u00ed \u017e\u00e1dn\u00e9 tab\u00e1kov\u00e9 listy - pouze nikotin, p\u0159\u00edchut\u011b a plnidla. Eliminuj\u00ed sice spalov\u00e1n\u00ed a mnoho toxin\u016f spojen\u00fdch s kou\u0159en\u00edm, ale st\u00e1le dod\u00e1vaj\u00ed nikotin p\u0159\u00edmo do krevn\u00edho ob\u011bhu.<\/p>\n\n\n\n
To je d\u016fle\u017eit\u00e9, proto\u017ee bylo prok\u00e1z\u00e1no, \u017ee nikotin s\u00e1m o sob\u011b, bez ohledu na zp\u016fsob pod\u00e1n\u00ed, ovliv\u0148uje \u0159adu fyziologick\u00fdch syst\u00e9m\u016f - v\u010detn\u011b t\u011bch, kter\u00e9 jsou d\u016fle\u017eit\u00e9 pro plodnost.<\/p>\n\n\n\n
Bylo navr\u017eeno n\u011bkolik mechanism\u016f, kter\u00fdmi by nikotin mohl zhor\u0161ovat mu\u017eskou plodnost:<\/p>\n\n\n\n
Tyto \u00fa\u010dinky byly potvrzeny v cel\u00e9 \u0159ad\u011b studi\u00ed na zv\u00ed\u0159atech a podpo\u0159eny - i kdy\u017e opatrn\u011bji - v\u00fdzkumem na lidech.<\/p>\n\n\n\n
V kontrolovan\u00fdch studi\u00edch na zv\u00ed\u0159atech m\u00e1 expozice nikotinu d\u016fsledn\u011b negativn\u00ed vliv na plodnost. Nap\u0159\u00edklad jedna studie na potkanech zjistila, \u017ee ka\u017edodenn\u00ed pod\u00e1v\u00e1n\u00ed nikotinu po dobu 28 dn\u016f v\u00fdznamn\u011b sn\u00ed\u017eilo po\u010det, pohyblivost a \u017eivotaschopnost spermi\u00ed a z\u00e1rove\u0148 zv\u00fd\u0161ilo morfologick\u00e9 abnormality.<\/p>\n\n\n\n
V jin\u00e9 studii byla po chronick\u00e9 expozici nikotinu pozorov\u00e1na degenerace semenn\u00fdch kan\u00e1lk\u016f (kde se tvo\u0159\u00ed spermie) a zv\u00fd\u0161en\u00e9 markery oxida\u010dn\u00edho stresu.<\/p>\n\n\n\n
P\u0159esto\u017ee studie t\u00fdkaj\u00edc\u00ed se nikotinov\u00fdch s\u00e1\u010dk\u016f teprve vznikaj\u00ed, m\u016f\u017eeme se hodn\u011b nau\u010dit od p\u0159\u00edbuzn\u00fdch nikotinov\u00fdch v\u00fdrobk\u016f:<\/p>\n\n\n\n
Vzhledem k tomu, \u017ee nikotinov\u00e9 s\u00e1\u010dky dod\u00e1vaj\u00ed podobn\u00e9 mno\u017estv\u00ed nikotinu jako tyto v\u00fdrobky, je d\u016fvodn\u00e9 podez\u0159en\u00ed, \u017ee by s sebou mohly n\u00e9st podobn\u00e1 rizika.<\/p>\n\n\n\n
Testosteron m\u00e1 z\u00e1sadn\u00ed v\u00fdznam pro reproduk\u010dn\u00ed zdrav\u00ed mu\u017e\u016f. Chronick\u00e9 u\u017e\u00edv\u00e1n\u00ed nikotinu bylo v mnoha studi\u00edch spojeno se sn\u00ed\u017eenou hladinou testosteronu. Jedna studie na zv\u00ed\u0159atech zjistila, \u017ee nikotin v\u00fdznamn\u011b sni\u017euje hladinu testosteronu v s\u00e9ru spolu s kl\u00ed\u010dov\u00fdmi enzymy varlat pot\u0159ebn\u00fdmi pro tvorbu hormon\u016f.<\/p>\n\n\n\n
A\u010dkoli je k dispozici m\u00e9n\u011b studi\u00ed o nikotinov\u00fdch s\u00e1\u010dc\u00edch na lidech, u u\u017eivatel\u016f tab\u00e1ku byly pozorov\u00e1ny podobn\u00e9 hormon\u00e1ln\u00ed vzorce, co\u017e vyvol\u00e1v\u00e1 obavy, \u017ee chronick\u00e9 u\u017e\u00edv\u00e1n\u00ed s\u00e1\u010dk\u016f by mohlo m\u00edt srovnateln\u00e9 endokrinn\u00ed \u00fa\u010dinky.<\/p>\n\n\n\n
Dobrou zpr\u00e1vou je, \u017ee po\u0161kozen\u00ed reprodukce zp\u016fsoben\u00e9 nikotinem nemus\u00ed b\u00fdt trval\u00e9. Studie z roku 2022 publikovan\u00e1 v \u010dasopise P\u0159\u00edroda<\/em> zjistil, \u017ee u mu\u017e\u016f, kte\u0159\u00ed p\u0159estali kou\u0159it, do\u0161lo b\u011bhem 3-6 m\u011bs\u00edc\u016f k v\u00fdrazn\u00e9mu zlep\u0161en\u00ed koncentrace, objemu a pohyblivosti spermi\u00ed.<\/p>\n\n\n\n To nazna\u010duje, \u017ee mu\u017ei, kte\u0159\u00ed p\u0159estanou u\u017e\u00edvat nikotinov\u00e9 s\u00e1\u010dky, by mohli potenci\u00e1ln\u011b zvr\u00e1tit n\u011bkter\u00e9 nep\u0159\u00edzniv\u00e9 \u00fa\u010dinky na plodnost.<\/p>\n\n\n\n Mnoho u\u017eivatel\u016f s\u00e1\u010dk\u016f tvrd\u00ed, \u017ee vzhledem k n\u00edzk\u00e9mu d\u00e1vkov\u00e1n\u00ed a bezd\u00fdmn\u00e9mu zp\u016fsobu pod\u00e1v\u00e1n\u00ed by p\u0159\u00edle\u017eitostn\u00e9 u\u017e\u00edv\u00e1n\u00ed m\u011blo p\u0159edstavovat minim\u00e1ln\u00ed riziko. Je v\u0161ak d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee:<\/p>\n\n\n\n Na z\u00e1klad\u011b sou\u010dasn\u00fdch d\u016fkaz\u016f m\u016f\u017ee nikotin - bez ohledu na zp\u016fsob pod\u00e1v\u00e1n\u00ed - naru\u0161it mu\u017eskou plodnost prost\u0159ednictv\u00edm hormon\u00e1ln\u00edch poruch, oxida\u010dn\u00edho stresu a p\u0159\u00edm\u00e9ho po\u0161kozen\u00ed spermi\u00ed. I kdy\u017e je zapot\u0159eb\u00ed dal\u0161\u00edho v\u00fdzkumu, kter\u00fd by potvrdil \u00fa\u010dinky konkr\u00e9tn\u011b nikotinov\u00fdch s\u00e1\u010dk\u016f, je rozumn\u00e9 je pova\u017eovat za potenci\u00e1ln\u00ed riziko pro plodnost, zejm\u00e9na u mu\u017e\u016f, kte\u0159\u00ed se aktivn\u011b sna\u017e\u00ed ot\u011bhotn\u011bt.<\/p>\n\n\n\n Pro mu\u017ee, kte\u0159\u00ed se ob\u00e1vaj\u00ed o reproduk\u010dn\u00ed zdrav\u00ed, je rozumnou strategi\u00ed omezit nebo zcela vylou\u010dit u\u017e\u00edv\u00e1n\u00ed nikotinu.<\/p>\n\n\n\n <\/p>","protected":false},"excerpt":{"rendered":" With the rapid rise of smokeless alternatives like Zyn, VELO, and On!, nicotine pouches have found a large following among adults trying to avoid cigarettes and vaping. But a growing concern\u2014particularly among men of reproductive age\u2014is whether nicotine pouches could impact male fertility. While these products are marketed as “cleaner” alternatives, does that mean they\u2019re […]<\/p>\n","protected":false},"author":17481,"featured_media":13533,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"[]"},"categories":[261],"tags":[],"class_list":["post-7533","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health"],"acf":[],"_links":{"self":[{"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/posts\/7533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/users\/17481"}],"replies":[{"embeddable":true,"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/comments?post=7533"}],"version-history":[{"count":0,"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/posts\/7533\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/media\/13533"}],"wp:attachment":[{"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/media?parent=7533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/categories?post=7533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/whitelip.com\/cs\/wp-json\/wp\/v2\/tags?post=7533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Jak je to s mal\u00fdmi d\u00e1vkami nebo p\u0159\u00edle\u017eitostn\u00fdm u\u017e\u00edv\u00e1n\u00edm?<\/h2>\n\n\n\n
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Z\u00e1v\u011br: Co zat\u00edm v\u00edme<\/h2>\n\n\n\n
Odkazy<\/h2>\n\n\n\n
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