{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T19:59:30Z","timestamp":1782331170045,"version":"3.54.5"},"reference-count":31,"publisher":"Akademiai Kiado Zrt.","issue":"7","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2007,2,1]]},"abstract":"<jats:p>A emberek D\n <jats:sub>3<\/jats:sub>\n -vitamin sz\u00fcks\u00e9glet\u00e9nek legfontosabb forr\u00e1sa a b\u0151rben lezajl\u00f3 D-vitamin szint\u00e9zis, ennek kulcsl\u00e9p\u00e9se a D-provitamin ultraibolya sug\u00e1rz\u00e1s hat\u00e1s\u00e1ra bek\u00f6vetkez\u0151 foto\u00e1talakul\u00e1sa D-previtaminn\u00e1, amelyb\u0151l a D\n <jats:sub>3<\/jats:sub>\n -vitamin h\u0151 hat\u00e1s\u00e1ra keletkezik. Haz\u00e1nk elhelyezked\u00e9s\u00e9vel azonos sz\u00e9less\u00e9gi k\u00f6r\u00f6k\u00f6n v\u00e9gzett vizsg\u00e1latok alapj\u00e1n az ultraibolya-B sug\u00e1rz\u00e1s a t\u00e9li id\u0151szakban nem elegend\u0151 a D\n <jats:sub>3<\/jats:sub>\n -vitamin sz\u00fcks\u00e9glet biztos\u00edt\u00e1s\u00e1hoz, ez D\n <jats:sub>3<\/jats:sub>\n -vitamin hi\u00e1nyhoz vezethet, \u00e9s n\u00f6veli az osteoporosis kialakul\u00e1s\u00e1nak kock\u00e1zat\u00e1t. \n <jats:italic>C\u00e9lkit\u0171z\u00e9s:<\/jats:italic>\n E tanulm\u00e1ny c\u00e9lja annak meg\u00edt\u00e9l\u00e9se volt, hogy a magyar lakoss\u00e1g sz\u00e1m\u00e1ra a napb\u00f3l \u00e9rkez\u0151 ultraibolya sug\u00e1rz\u00e1s az \u00e9v k\u00fcl\u00f6nb\u00f6z\u0151 h\u00f3napjaiban biztos\u00edtja-e napi 1000 IU D\n <jats:sub>3<\/jats:sub>\n -vitamin keletkez\u00e9s\u00e9t, illetve az ultraibolya expoz\u00edci\u00f3 szempontj\u00e1b\u00f3l kedvez\u0151tlenebb t\u00e9li \u00e9s tavaszi h\u00f3napokban kialakulhat-e D\n <jats:sub>3<\/jats:sub>\n -vitamin hi\u00e1ny. \n <jats:italic>M\u00f3dszer:<\/jats:italic>\n A szerz\u0151k elemz\u00e9seikhez a rendszeres m\u00e9r\u00e9seken alapul\u00f3, a f\u00f6ldfelsz\u00ednt Budapesten \u00e9r\u0151 ultraibolya-B sug\u00e1rz\u00e1si adatokat hasn\u00e1lt\u00e1k fel. Jelen becsl\u00e9s elv\u00e9gz\u00e9s\u00e9hez a szerz\u0151k a D\n <jats:sub>3<\/jats:sub>\n -vitamin termel\u0151d\u00e9s szempontj\u00e1b\u00f3l legkedvez\u0151bb felt\u00e9teleket vett\u00e9k figyelembe, \u00e9s ezekkel az \u00e9v egyes h\u00f3napjainak ultraibolya-B sug\u00e1rz\u00e1si \u00e1tlag\u00e9rt\u00e9k\u00e9re vonatkoz\u00f3an meghat\u00e1rozt\u00e1k a D\n <jats:sub>3<\/jats:sub>\n -vitamin termel\u0151d\u00e9s lehets\u00e9ges optim\u00e1lis m\u00e9rt\u00e9k\u00e9t. \n <jats:italic>Eredm\u00e9nyek:<\/jats:italic>\n A sz\u00e1m\u00edt\u00e1sok alapj\u00e1n Budapesten a d\u00e9li \u00f3r\u00e1kban a f\u00f6ld felsz\u00edn\u00e9t el\u00e9r\u0151 legnagyobb mennyis\u00e9g\u0171 hat\u00e9kony ultraibolya-B sug\u00e1rz\u00e1s j\u00faliusban, m\u00edg a legkevesebb december h\u00f3napban jelentkezik, a k\u00e9t h\u00f3nap k\u00f6z\u00f6tt a k\u00fcl\u00f6nbs\u00e9g t\u00f6bb mint 35-sz\u00f6r\u00f6s a j\u00faliusi h\u00f3nap jav\u00e1ra. A november\u2013m\u00e1rciusi id\u0151szakban t\u00f6bb mint 200 percet kellene a szabadban napon elt\u00f6lteni, hogy el\u00e9gs\u00e9ges D\n <jats:sub>3<\/jats:sub>\n -vitamin termel\u0151dhessen a b\u0151rben. Ez egyr\u00e9szt irre\u00e1lisan hossz\u00fa id\u0151, mert m\u00e1r t\u00falny\u00falik a d\u00e9l k\u00f6r\u00fcli maxim\u00e1lis napsug\u00e1rz\u00e1si id\u0151szakon, amit a sz\u00e1m\u00edt\u00e1sokhoz alapul vett\u00fcnk, m\u00e1sr\u00e9szt, ha csak az arc \u00e9s k\u00e9z fedetlen, akkor a sz\u00fcks\u00e9ges besug\u00e1rzotts\u00e1g meghaladja az 1 minim\u00e1lis erithema d\u00f3zis \u00e9rt\u00e9ket, azaz a b\u0151r le\u00e9g\u00e9s\u00e9t okozza. \n <jats:italic>K\u00f6vetkeztet\u00e9sek:<\/jats:italic>\n A kapott eredm\u00e9nyek alapj\u00e1n, Budapesten az eg\u00e9sz \u00e9vi hat\u00e9kony ultraibolya-B sug\u00e1rz\u00e1s t\u00f6bb mint 95%-a a m\u00e1rciust\u00f3l okt\u00f3berig terjed\u0151 id\u0151szakban m\u00e9rhet\u0151, teh\u00e1t a november\u2013febru\u00e1ri id\u0151szak feltehet\u0151en akkor sem ny\u00fajtana el\u00e9g mennyis\u00e9g\u0171 ultraibolya sug\u00e1rz\u00e1st, ha ennek \u00e9rv\u00e9nyes\u00fcl\u00e9s\u00e9t egy\u00e9bk\u00e9nt nem akad\u00e1lyozn\u00e1 az ebben az id\u0151szakban jellemz\u0151 \u00e9s elker\u00fclhetetlen z\u00e1rt ruh\u00e1zkod\u00e1s \u00e9s kevesebb szabadban tart\u00f3zkod\u00e1s.<\/jats:p>","DOI":"10.1556\/oh.2007.27840","type":"journal-article","created":{"date-parts":[[2007,3,26]],"date-time":"2007-03-26T19:17:41Z","timestamp":1174936661000},"page":"319-325","source":"Crossref","is-referenced-by-count":7,"title":["Vitamin D forming effectiveness of ultraviolet radiation from sunlight in different months in Budapest, Hungary"],"prefix":"10.1556","volume":"148","author":[{"given":"J\u00f3zsef","family":"Bakos","sequence":"first","affiliation":[{"name":"1 Fodor J\u00f3zsef Orsz\u00e1gos K\u00f6zeg\u00e9szs\u00e9g\u00fcgyi K\u00f6zpont Orsz\u00e1gos Fr\u00e9d\u00e9ric Joliot-Curie Sug\u00e1rbiol\u00f3giai \u00e9s Sug\u00e1reg\u00e9szs\u00e9g\u00fcgyi Kutat\u00f3 Int\u00e9zete Budapest Pf. 101 1775"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P\u00e9ter","family":"Mik\u00f3","sequence":"additional","affiliation":[{"name":"2 Novartis Hung\u00e1ria Kft. 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