{"id":6480,"date":"2026-10-19T09:48:57","date_gmt":"2026-10-19T09:48:57","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-heilbrigdisvisindum-jenny-jonsdottir\/"},"modified":"2026-10-19T09:48:57","modified_gmt":"2026-10-19T09:48:57","slug":"doktorsvorn-i-heilbrigdisvisindum-jenny-jonsdottir","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-heilbrigdisvisindum-jenny-jonsdottir\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed heilbrig\u00f0isv\u00edsindum – Jenn\u00fd J\u00f3nsd\u00f3ttir"},"content":{"rendered":"
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\u00deri\u00f0judaginn 30. j\u00fan\u00ed 2026 ver Jenn\u00fd J\u00f3nsd\u00f3ttir doktorsritger\u00f0 s\u00edna \u00ed heilbrig\u00f0isv\u00edsindum vi\u00f0 Matv\u00e6la- og n\u00e6ringarfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands. Ritger\u00f0in ber heiti\u00f0: N\u00e6ring ungbarna\u00a0\u2013\u00a0g\u00e6\u00f0i,\u00a0v\u00f6xtur\u00a0 og\u00a0notkun astmalyfja. L\u00fd\u00f0grundv\u00f6llu\u00f0 ranns\u00f3kn \u00e1 \u00edslensku m\u00e6\u00f0ra- og barnaheilsuranns\u00f3kninni. \u00c1 ensku: An\u00a0infant\u00a0diet\u00a0score,\u00a0BMI and\u00a0asthma\u00a0mediction\u00a0in\u00a0childhood. Population-based evidence from the Icelandic Maternal and Child Health Study (ICE-MCH).<\/p>\n

Andm\u00e6lendur eru dr. Nina Cecilie \u00d8verby, pr\u00f3fessor vi\u00f0 H\u00e1sk\u00f3lann \u00ed Agder \u00ed Noregi, og dr. Pauline Emmett, hei\u00f0ursv\u00edsindama\u00f0ur vi\u00f0 Centre for Academic Child Health, Bristol Medical School, University of Bristol.<\/p>\n

Umsj\u00f3narkennari og lei\u00f0beinandi voru Inga \u00de\u00f3rsd\u00f3ttir, pr\u00f3fessor og Birna \u00de\u00f3risd\u00f3ttir, lektor. Auk \u00feeirra s\u00e1tu \u00ed doktorsnefnd Gunnar Gu\u00f0mundsson, pr\u00f3fessor og \u00d3la Kall\u00fd Magn\u00fasd\u00f3ttir, doktor \u00ed n\u00e6ringarfr\u00e6\u00f0i.<\/p>\n

\u00d3lafur \u00d6gmundarson, pr\u00f3fessor og deildarforseti Matv\u00e6la- og n\u00e6ringarfr\u00e6\u00f0ideildar, stj\u00f3rnar ath\u00f6fninni sem fer fram \u00ed H\u00e1t\u00ed\u00f0asal H\u00e1sk\u00f3la \u00cdslands og hefst kl. 13.00.<\/p>\n

\u00c1grip <\/strong><\/p>\n

Fyrsta aldurs\u00e1ri\u00f0 er mikilv\u00e6gt t\u00edmabil \u00ed \u00feroska barna og ranns\u00f3knir hafa bent til \u00feess a\u00f0 n\u00e6ring \u00e1 \u00feessum t\u00edma geti haft \u00e1hrif \u00e1 heilsu til lengri t\u00edma. F\u00e1ar l\u00fd\u00f0grunda\u00f0ar ranns\u00f3knir hafa \u00fe\u00f3 veri\u00f0 ger\u00f0ar sem meta heildr\u00e6nt g\u00e6\u00f0i matar\u00e6\u00f0is ungbarna, \u00fer\u00f3un brj\u00f3stagjafar og annarrar f\u00e6\u00f0ugjafar og tengsl \u00feessara \u00fe\u00e1tta vi\u00f0 heilsu \u00e1 barnsaldri. Markmi\u00f0 doktorsverkefnisins, N\u00e6ring ungbarna – g\u00e6\u00f0i, v\u00f6xtur og notkun astmalyfja, var a\u00f0 rannsaka tengsl milli n\u00e6ringar ungbarna, vaxtar og notkunar astmalyfja hj\u00e1 b\u00f6rnum.<\/p>\n

Ritger\u00f0in byggir \u00e1 g\u00f6gnum \u00far \u00edslensku m\u00e6\u00f0ra- og barnaheilsuranns\u00f3kninni (Icelandic Maternal and Child Health Study, ICE-MCH), \u00fear sem nota\u00f0ar voru uppl\u00fdsingar \u00far rafr\u00e6num heilbrig\u00f0isskr\u00e1m. \u00der\u00f3a\u00f0ur var n\u00fdr m\u00e6likvar\u00f0i \u00e1 g\u00e6\u00f0i ungbarnan\u00e6ringar, n\u00e6ringarv\u00edsir (e. Infant Diet Score, IDS), sem metur hversu vel n\u00e6ring ungbarna samr\u00e6mist \u00edslenskum og al\u00fej\u00f3\u00f0legum r\u00e1\u00f0leggingum. V\u00edsirinn byggir me\u00f0al annars \u00e1 uppl\u00fdsingum um brj\u00f3stagj\u00f6f, innlei\u00f0ingu f\u00e6\u00f0utegunda, fj\u00f6lbreytni \u00ed f\u00e6\u00f0u og D-v\u00edtam\u00edngj\u00f6f. Tengsl IDS vi\u00f0 v\u00f6xt barna voru ranns\u00f6ku\u00f0 fr\u00e1 fyrsta aldurs\u00e1ri fram til 9 \u00e1ra aldurs. Einnig voru tengsl IDS vi\u00f0 notkun astmalyfja \u00e1 aldrinum 1 til 7 \u00e1ra ranns\u00f6ku\u00f0 me\u00f0 uppl\u00fdsingum \u00far Lyfjagagnagrunni Emb\u00e6ttis landl\u00e6knis.<\/p>\n

Ni\u00f0urst\u00f6\u00f0ur ranns\u00f3knarinnar s\u00fdndu a\u00f0 betra samr\u00e6mi vi\u00f0 r\u00e1\u00f0leggingar um n\u00e6ringu ungbarna tengdist hagst\u00e6\u00f0ari vaxtarferlum \u00e1 barnsaldri og minni l\u00edkum \u00e1 notkun astmalyfja. Tengslin voru s\u00e9rstaklega \u00e1berandi fyrir lengd brj\u00f3stagjafar og notkun D-v\u00edtam\u00edns. Ni\u00f0urst\u00f6\u00f0urnar undirstrika mikilv\u00e6gi n\u00e6ringar \u00e1 fyrsta aldurs\u00e1ri og benda til \u00feess a\u00f0 h\u00fan geti haft \u00e1hrif \u00e1 heilsu barna langt fram eftir aldri. Ranns\u00f3knin s\u00fdnir jafnframt hvernig n\u00fdta m\u00e1 \u00edslensk heilbrig\u00f0isg\u00f6gn og landsbundnar skr\u00e1r til a\u00f0 rannsaka langt\u00edma\u00e1hrif snemmb\u00e6rra \u00e1hrifa\u00fe\u00e1tta \u00e1 heilsu barna.<\/p>\n

Abstract \u00a0<\/strong><\/p>\n

The first year of life is a critical period for child development, and nutrition during this time may influence health later in life. However, few population-based studies have comprehensively assessed infant diet quality and its associations with childhood health outcomes. The aim of this doctoral thesis, An Infant Diet Score, BMI, and Asthma Medication in Childhood: Population-Based Evidence from the Icelandic Maternal and Child Health Study (ICE-MCH), was to investigate associations between infant nutrition, childhood growth, and asthma medication use.<\/p>\n

The thesis is based on data from the Icelandic Maternal and Child Health Study (ICE-MCH), using information from electronic health records. Infant Diet Score (IDS) was developed to assess adherence to infant diet recommendations. Associations between the IDS, growth outcomes up to 9 years of age, and asthma medication use between ages 1 and 7 years were examined.<\/p>\n

Adherence to infant diet recommendations was associated with more favorable growth trajectories and lower odds of asthma medication during childhood. These findings highlight the importance of infant nutrition for later child health.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Jenn\u00fd J\u00f3nsd\u00f3ttir er f\u00e6dd \u00e1ri\u00f0 1993 \u00ed Reykjav\u00edk. H\u00fan lauk BS-pr\u00f3fi \u00ed hj\u00fakrunarfr\u00e6\u00f0i fr\u00e1 Hj\u00fakrunarfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 2020 og meistarapr\u00f3fi \u00ed heilbrig\u00f0isv\u00edsindum fr\u00e1 Matv\u00e6la- og n\u00e6ringarfr\u00e6\u00f0ideild sama sk\u00f3la \u00e1ri\u00f0 2022. H\u00fan h\u00f3f doktorsn\u00e1m vi\u00f0 H\u00e1sk\u00f3la \u00cdslands \u00e1 vormisseri 2023. Jenn\u00fd hefur \u00e1huga \u00e1 hj\u00fakrun og heilbrig\u00f0isv\u00edsindum, einkum barnahj\u00fakrun og heilsug\u00e6slu, jafnhli\u00f0a v\u00edsindalegum \u00e1huga \u00e1 gagnaranns\u00f3knum. Samhli\u00f0a n\u00e1mi hefur Jenn\u00fd veri\u00f0 \u00ed hlutastarfi \u00e1 Barnadeild Landsp\u00edtala undanfarin \u00e1r.<\/p>\n

Jenn\u00fd \u00f3lst upp h\u00e9rlendis og \u00ed Danm\u00f6rku, \u00fear sem h\u00fan bj\u00f3 um langt skei\u00f0 me\u00f0 foreldrum s\u00ednum, \u00feeim J\u00f3ni Axeli Antonssyni, flugmanni og t\u00f6lvunarfr\u00e6\u00f0ingi, og Magnfr\u00ed\u00f0i Halld\u00f3rsd\u00f3ttur, hj\u00fakrunarfr\u00e6\u00f0ingi. Samb\u00fdlisma\u00f0ur Jenn\u00fdar er Mj\u00f6lnir Andersen, rafvirki.<\/p>\n<\/div><\/div>","protected":false},"featured_media":5902,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2026-06-30T13:00:00+00:00","_phd_date_end":"2026-06-30T16:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0asalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"N\u00e6ring ungbarna \u2013 g\u00e6\u00f0i, v\u00f6xtur og notkun astmalyfja. 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