{"id":48698,"date":"2018-04-13T11:17:48","date_gmt":"2018-04-13T11:17:48","guid":{"rendered":"https:\/\/www.humanitas.net\/?post_type=wiki&#038;p=48698"},"modified":"2018-04-13T11:18:08","modified_gmt":"2018-04-13T11:18:08","slug":"calciul","status":"publish","type":"wiki","link":"https:\/\/www.humanitas.net\/ro\/wiki\/minerale\/calciul\/","title":{"rendered":"Calciul"},"content":{"rendered":"<h2>Ce este calciul?<\/h2>\n<p>Calciul este cel mai abundent mineral din corp. 99% din cantitatea sa total\u0103 este concentrat\u0103 \u00een oase (unde se acumuleaz\u0103 sub form\u0103 de carbonat) \u0219i \u00een din\u021bi. Pe l\u00e2ng\u0103 construirea oaselor \u0219i men\u021binerea s\u0103n\u0103t\u0103\u021bii lor, calciul ajut\u0103 \u0219i la prevenirea apari\u021biei cheagurilor de s\u00e2nge. El ajut\u0103 inima, nervii, mu\u0219chii \u0219i alte sisteme din corp s\u0103 func\u021bioneze corect. Deoarece organismul nu poate produce calciu nou, este important s\u0103 fie ob\u021binut din alimente. Dac\u0103 nu se face acest lucru, poate s\u0103 apar\u0103 sl\u0103biciunea \u0219i fragilitatea oaselor, deoarece organismul va extrage calciu din oase.<\/p>\n<h2>Care este func\u021bia calciului?<\/h2>\n<p>Calciul este esen\u021bial pentru dezvoltarea \u0219i s\u0103n\u0103tatea oaselor \u0219i a din\u021bilor. De fapt, oasele sunt supuse unui proces continuu de remodelare, care implic\u0103 resorb\u021bia \u0219i depunerea calciului \u00een noul \u021besut osos. Doar 1% din stocurile totale din acest mineral particip\u0103 la alte func\u021bii cum ar fi: contrac\u021bia muscular\u0103, transmisia nervoas\u0103, secre\u021bia de hormoni, vasodilata\u021bia \u0219i contrac\u021bia vaselor de s\u00e2nge.<\/p>\n<h2>Ce alimente sunt bogate \u00een calciu?<\/h2>\n<p>Alimentele sunt cea mai bun\u0103 surs\u0103 de calciu. Principalele surse de calciu din diet\u0103 includ laptele \u0219i deriva\u021bii s\u0103i, \u00een special br\u00e2nza, iaurtul \u0219i alte specialit\u0103\u021bi din lapte fermentat. Acest mineral se g\u0103se\u0219te, de asemenea, \u00een anumite legume cu frunze verzi, cum ar fi varza chinez\u0103, kale \u0219i broccoli, \u00een p\u00e2ine, tofu, nuci, precum \u0219i \u00een mul\u021bi pe\u0219ti \u0219i crustacee (cum ar fi sardinele, scoicile \u0219i midiile).<\/p>\n<h2>Care este cerin\u021ba zilnic\u0103 recomandat\u0103 de calciu?<\/h2>\n<p>Consumul zilnic recomandat de calciu este egal cu 800 mg. Totu\u0219i, el poate varia \u00een func\u021bie de v\u00e2rsta persoanei. De asemenea, cerin\u021ba zilnic\u0103 de calciu cre\u0219te \u00een timpul sarcinii \u0219i al\u0103pt\u0103rii. Unele persoane pot avea nevoie de suplimente de calciu pentru a primi doza recomandat\u0103. Acest lucru este deosebit de important la copiii care nu primesc suficient calciu \u00een dieta lor \u00een perioada de cre\u0219tere \u0219i dezvoltare a structurii osoase.<\/p>\n<h2>Care sunt consecin\u021bele deficien\u021bei de calciu?<\/h2>\n<p>Deficitul de calciu poate r\u0103m\u00e2ne asimptomatic pe o perioad\u0103 scurt\u0103 de timp, dar dac\u0103 nu este tratat corespunz\u0103tor, poate avea consecin\u021be foarte grave. Simptomele timpurii includ furnic\u0103turi \u0219i amor\u021beal\u0103 a degetelor, crampe musculare, convulsii, somnolen\u021b\u0103, apetit sc\u0103zut \u0219i b\u0103t\u0103i anormale ale inimii. Pe termen lung, poate apare osteopenia (reducerea masei osoase), conduc\u00e2nd la un caz mai sever de osteoporoz\u0103, cu risc crescut de fracturi. De asemenea, rahitismul poate fi o consecin\u021b\u0103 a lipsei de calciu, de\u0219i este mai frecvent atunci c\u00e2nd este vorba de caren\u021ba de vitamina D. Deficitul de calciu se reg\u0103se\u0219te \u0219i \u00een cazul persoanelor care nu absorb suficient calciu, din cauza unor afec\u021biuni cum ar fi boala Crohn, boala celiac\u0103 \u0219i a unor interven\u021bii chirurgicale intestinale.<\/p>\n<h2>Care sunt consecin\u021bele aportului excesiv de calciu?<\/h2>\n<p>Excesul de calciu din s\u00e2nge poate duce la insuficien\u021b\u0103 renal\u0103, calcificarea vaselor de s\u00e2nge \u0219i a \u021besuturilor moi, cre\u0219terea calciului \u00een urin\u0103 \u0219i pietre la rinichi. De asemenea, consumul excesiv de calciu poate determina constipa\u021bie \u0219i poate interfera cu absorb\u021bia fierului \u0219i a zincului. De\u0219i mai pu\u021bin frecvent, exist\u0103 o asociere \u00eentre calciul \u0219i riscul crescut de cancer de prostat\u0103 \u0219i de boli cardiovasculare.<\/p>\n<h2>Este adev\u0103rat c\u0103 acesta poate s\u0103 ajute la prevenirea osteoporozei?<\/h2>\n<p>Deficitul de calciu poate exacerba osteoporoza; cu toate acestea, problema trebuie abordat\u0103 c\u00e2t mai cur\u00e2nd posibil. De fapt, este necesar s\u0103 se asigure o osificare adecvat\u0103 la o v\u00e2rst\u0103 timpurie<\/p>\n","protected":false},"author":11,"featured_media":0,"template":"","wiki-categories":[1617],"wiki-types":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.7.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Calciul - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.humanitas.net\/ro\/wiki\/minerale\/calciul\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Calciul - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Ce este calciul? 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Calciul este cel mai abundent mineral din corp. 99% din cantitatea sa total\u0103 este concentrat\u0103 \u00een oase (unde se acumuleaz\u0103 sub form\u0103 de carbonat) \u0219i \u00een din\u021bi. Pe l\u00e2ng\u0103 construirea oaselor \u0219i men\u021binerea s\u0103n\u0103t\u0103\u021bii lor, calciul ajut\u0103 \u0219i la prevenirea apari\u021biei cheagurilor de s\u00e2nge. 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