• Adults with attention deficit hyperactivity disorder report high symptom levels of troubled sleep, restless legs, and cataplexy 

      Bjorvatn, Bjørn; Brevik, Erlend Joramo; Lundervold, Astri; Halmøy, Anne; Posserud, Maj-Britt Rocio; Instanes, Johanne Telnes; Haavik, Jan (Peer reviewed; Journal article, 2017-09-20)
      Objective: To compare the occurrence of a spectrum of different self-reported sleep problems in adults with ADHD and a control group, and to study the impact of current ADHD medication use and clinical ADHD subtype. Method: ...
    • Association of sweetened carbonated beverage consumption during pregnancy and ADHD symptoms in the ofspring: a study from the Norwegian Mother, Father and Child Cohort Study (MoBa) 

      Kvalvik, Liv Grimstvedt; Klungsøyr, Kari; Igland, Jannicke; Caspersen, Ida Henriette; Brantsæter, Anne Lise; Solberg, Berit Skretting; Hartman, Catharina; Schweren, Lizanne Johanna Stephanie; Larsson, Henrik; Li, Lin; Forthun, Ingeborg; Johansson, Stefan; Vasquez, Alejandro Arias; Haavik, Jan (Journal article; Peer reviewed, 2022)
      Purpose Intrauterine exposures influence offspring health and development. Here we investigated maternal intake of sweetened carbonated beverages (SCB) during pregnancy and its association with ADHD symptoms in the ...
    • Attention-deficit/hyperactivity disorder in offspring of mothers with inflammatory and immune system diseases 

      Instanes, Johanne Telnes; Halmøy, Anne; Engeland, Anders; Haavik, Jan; Furu, Kari; Klungsøyr, Kari (Peer reviewed; Journal article, 2017-03)
      Background: Prenatal inflammatory mechanisms may play a role in the pathogenesis of psychiatric disorders and could be relevant for attention-deficit/hyperactivity disorder (ADHD). We investigated maternal chronic somatic ...
    • Common psychiatric and metabolic comorbidity of adult attention-deficit/hyperactivity disorder: A population-based cross-sectional study 

      Chen, Qi; Hartman, Catharina A; Haavik, Jan; Harro, Jaanus; Klungsøyr, Kari; Hegvik, Tor-Arne; Wanders, Rob; Ottosen, Cæcilie; Dalsgaard, Søren; Faraone, Stephen V.; Larsson, Henrik (Peer reviewed; Journal article, 2018-09-26)
      Attention-deficit/hyperactivity disorder (ADHD) is often comorbid with other psychiatric conditions in adults. Yet, less is known about its relationship with common metabolic disorders and how sex and ageing affect the ...
    • Rare variants with large effects provide functional insights into the pathology of migraine subtypes, with and without aura 

      Bjornsdottir, Gyda; Chalmer, Mona A.; Stefansdottir, Lilja; Skuladottir, Astros Th.; Einarsson, Gudmundur; Andresdottir, Margret; Beyter, Doruk; Ferkingstad, Egil; Gretarsdottir, Solveig; Halldorsson, Bjarni V.; Halldorsson, Gisli H.; Helgadottir, Anna; Helgason, Hannes; Hjorleifsson Eldjarn, Grimur; Jonasdottir, Adalbjorg; Jonasdottir, Aslaug; Jonsdottir, Ingileif; Knowlton, Kirk U.; Nadauld, Lincoln D.; Lund, Sigrun H.; Magnusson, Olafur Th.; Melsted, Pall; Moore, Kristjan H. S.; Oddsson, Asmundur; Olason, Pall I.; Sigurdsson, Asgeir; Stefansson, Olafur A.; Saemundsdottir, Jona; Sveinbjornsson, Gardar; Tragante, Vinicius; Unnsteinsdottir, Unnur; Walters, G. Bragi; Zink, Florian; Rødevand, Linn; Andreassen, Ole; Igland, Jannicke; Lie, Rolv T.; Haavik, Jan; Banasik, Karina; Brunak, Søren; Didriksen, Maria; T. Bruun, Mie; Erikstrup, Christian; Kogelman, Lisette J. A.; Nielsen, Kaspar R.; Sørensen, Erik; Pedersen, Ole B.; Ullum, Henrik; Bay, Jakob; Boldsen, Jens K.; Brodersen, Thorsten; Burgdorf, Kristoffer; Dinh, Khoa M.; Dowsett, Joseph; Feenstra, Bjarke; Geller, Frank; Hindhede, Lotte; Hjalgrim, Henrik; Jacobsen, Rikke L.; Jemec, Gregor; Kaspersen, Katrine; Kjerulf, Bertram D.; Larsen, Margit A. H.; Louloudis, Ioannis; Lundgaard, Agnete; Mikkelsen, Susan; Mikkelsen, Christina; Nissen, Ioanna; Nyegaard, Mette; Henriksen, Alexander P.; Rohde, Palle D.; Rostgaard, Klaus; Swinn, Michael; Thørner, Lise W.; Bruun, Mie T.; Werge, Thomas; Westergaard, David; Masson, Gisli; Thorsteinsdottir, Unnur; Olesen, Jes; Ludvigsson, Petur; Thorarensen, Olafur; Bjornsdottir, Anna; Sigurdardottir, Gudrun R.; Sveinsson, Olafur A.; Ostrowski, Sisse R.; Holm, Hilma; Gudbjartsson, Daniel F.; Thorleifsson, Gudmar; Sulem, Patrick; Stefansson, Hreinn; Thorgeirsson, Thorgeir E.; Hansen, Thomas F; Stefansson, Kari (Journal article; Peer reviewed, 2023)
      Migraine is a complex neurovascular disease with a range of severity and symptoms, yet mostly studied as one phenotype in genome-wide association studies (GWAS). Here we combine large GWAS datasets from six European ...