{"id":80638,"date":"2018-04-13T12:02:25","date_gmt":"2018-04-13T12:02:25","guid":{"rendered":"http:\/\/humanitasnet-new.local\/enciclopedia\/seleniul\/"},"modified":"2018-04-13T12:02:25","modified_gmt":"2018-04-13T12:02:25","slug":"seleniul","status":"publish","type":"enciclopedia","link":"https:\/\/humanitas-net.humweb.webiz.team\/ro\/wiki\/seleniul\/","title":{"rendered":"Seleniul"},"content":{"rendered":"<h2 id=\"ce-este-seleniul\">Ce este seleniul?<\/h2>\n<p>Seleniul este un element care se g\u0103se\u0219te \u00een cantit\u0103\u021bi mici \u00een organism. Este esen\u021bial pentru corp, deoarece joac\u0103 un rol important \u00een func\u021bia tiroidian\u0103 \u0219i \u00een func\u021bionarea corect\u0103 a sistemului imunitar.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"ce-rol-are-seleniul\">Ce rol are seleniul?<\/h2>\n<p>\u00cen interiorul celulelor, seleniul permite buna func\u021bionare a antioxidan\u021bilor celulari. Ace\u0219tia ajut\u0103 la combaterea particulelor d\u0103un\u0103toare din organism, cunoscute sub numele de radicalii liberi. Radicalii liberi pot deteriora membranele celulare \u0219i ADN-ul, contribuind \u00een schimb la \u00eemb\u0103tr\u00e2nire \u0219i apari\u021bia problemelor de s\u0103n\u0103tate. Antioxidan\u021bii joac\u0103 un rol \u00een neutralizarea radicalilor liberi, pentru a reduce sau preveni daunele pe care ace\u0219tia le pot provoca. Ca parte a zecilor de proteine, seleniul ia adesea denumirea de &#8220;protein\u0103 de seleniu&#8221; \u0219i este implicat \u00een mai multe alte procese, cum ar fi sinteza ADN-ului la metabolismul glandelor tiroide, circul\u00e2nd pentru a proteja organismul \u00eempotriva infec\u021biilor<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"ce-alimente-sunt-bogate-in-seleniu\">Ce alimente sunt bogate \u00een seleniu?<\/h2>\n<p>Alimentele bogate \u00een seleniu sunt pe\u0219tele \u0219i carnea. Alte surse includ carnea ro\u0219ie, produsele lactate \u0219i cerealele. \u00cen general, cantitatea de seleniu prezent\u0103 \u00een alimentele de origine vegetal\u0103 depinde de cantitatea de seleniu din solul \u00een care a fost crescut. Consumarea unei mari variet\u0103\u021bi de alimentele neprelucrate, integrale reprezint\u0103 cea mai bun\u0103 metod\u0103 de a ob\u021bine seleniu din m\u00e2ncare.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"care-este-cerinta-zilnica-recomandata-de-seleniu\">Care este cerin\u021ba zilnic\u0103 recomandat\u0103 de seleniu?<\/h2>\n<p>Consumul zilnic recomandat de seleniu variaz\u0103 \u00een func\u021bie de v\u00e2rsta individului.<\/p>\n<p>20 micrograme pe zi pentru copii cu v\u00e2rsta sub 3 ani<\/p>\n<p>30 micrograme pe zi pentru copiii cu v\u00e2rsta sub 8 ani<\/p>\n<p>40 micrograme pe zi pentru copiii cu v\u00e2rsta sub 13 ani<\/p>\n<p>55 micrograme pe zi pentru persoanele cu v\u00e2rsta peste 14 ani<\/p>\n<p>Se recomand\u0103 60-70 micrograme pe zi pentru femeile \u00eens\u0103rcinate sau care al\u0103pteaz\u0103<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"care-sunt-consecintele-deficientei-de-seleniu\">Care sunt consecin\u021bele deficien\u021bei de seleniu?<\/h2>\n<p>Deficien\u021ba de seleniu poate reduce func\u021bia mu\u0219chilor scheletici, \u0219i interfereaz\u0103 cu producerea de globule ro\u0219ii, modific\u0103 pigmentarea pielii \u0219i a p\u0103rului, \u0219i cre\u0219te fragilitatea unghiilor. Nivelurile sc\u0103zute de seleniu pot, de asemenea, predispune la dezvoltarea bolilor \u00een prezen\u021ba stresului suplimentar. Astfel de cazuri pot implica infec\u021bii virale, care pot fi asociate cu infertilitatea masculin\u0103 \u0219i pot agrava efectele deficien\u021bei de iod, cresc\u00e2nd astfel riscul cretinismului la copii. Nivele sc\u0103zute de seleniu pot fi g\u0103site \u0219i la persoanele care fumeaz\u0103, consum\u0103 alcool, iau pilule contraceptive sau au afec\u021biuni care \u00eempiedic\u0103 procesul de absorb\u021bie a seleniului (cum ar fi boala Crohn sau colita ulcerativ\u0103).<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"care-sunt-consecintele-aportului-excesiv-de-seleniu\">Care sunt consecin\u021bele aportului excesiv de seleniu?<\/h2>\n<p>Cazurile de otr\u0103vire cu seleniu administrate prin suplimente au fost asociate cu simptome precum grea\u021b\u0103, v\u0103rs\u0103turi, diaree, dureri abdominale, unghii fragile \u0219i c\u0103derea p\u0103rului.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"este-adevarat-ca-administrarea-de-seleniu-este-buna-pentru-sanatate\">Este adev\u0103rat c\u0103 administrarea de seleniu este bun\u0103 pentru s\u0103n\u0103tate?<\/h2>\n<p>&nbsp;<\/p>\n<p>Seleniul este considerat un mineral care s-a dovedit a fi eficient \u0219i benefic pentru s\u0103n\u0103tate. Unele studii au asociat aportul de seleniu cu riscuri reduse de cancer, de efecte cognitive, boli cardiovasculare \u0219i probleme tiroidiene. Numai cercet\u0103rile ulterioare pot \u00eens\u0103 clarifica rolul posibil de prevenire jucat de acest element. \u00cen orice caz, datorit\u0103 poten\u021bialelor efecte secundare \u0219i a interac\u021biunilor cu medicamentele, este vital s\u0103 se contacteze medicul \u00eenainte de a lua supliment<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","Example":[1779],"class_list":["post-80638","enciclopedia","type-enciclopedia","status-publish","hentry","enciclopedia_category-minerale"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Seleniul - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Seleniul - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Ce este seleniul? 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