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Influence of light exposure during early life on the age of onset of bipolar disorder

  • Michael Bauer
  • , Tasha Glenn
  • , Martin Alda
  • , Ole A. Andreassen
  • , Elias Angelopoulos
  • , Raffaella Ardau
  • , Christopher Baethge
  • , Rita Bauer
  • , Bernhard T. Baune
  • , Frank Bellivier
  • , Robert H. Belmaker
  • , Michael Berk
  • , Thomas D. Bjella
  • , Letizia Bossini
  • , Yuly Bersudsky
  • , Eric Yat Wo Cheung
  • , Jörn Conell
  • , Maria del Zompo
  • , Seetal Dodd
  • , Bruno Etain
  • Andrea Fagiolini, Mark A. Frye, Kostas N. Fountoulakis, Jade Garneau-Fournier, Ana Gonzalez-Pinto, John F. Gottlieb, Hirohiko Harima, Stefanie Hassel, Chantal Henry, Apostolos Iacovides, Erkki T. Isometsä, Flávio Kapczinski, Sebastian Kliwicki, Barbara König, Rikke Krogh, Ute Lewitzka, Carlos Lopez-Jaramillo, Glenda M. MacQueen, Mirko Manchia, Wendy Marsh, Mónica Martinez-Cengotitabengoa, Ingrid Melle, Scott Monteith, Gunnar Morken, Rodrigo Munoz, Fabiano G. Nery, Claire O'Donovan, Yamima Osher, Andrea Pfennig, Danilo Quiroz, Raj Ramesar, Natalie Rasgon, Andreas Reif, Philipp Ritter, Janusz K. Rybakowski, Kemal Sagduyu, Ângela M. Scippa, Emanuel Severus, Christian Simhandl, Dan J. Stein, Sergio Strejilevich, Ahmad Hatim Sulaiman, Kirsi Suominen, Hiromi Tagata, Yoshitaka Tatebayashi, Carla Torrent, Eduard Vieta, Biju Viswanath, Mihir J. Wanchoo, Mark Zetin, Peter C. Whybrow
  • Technische Universität Dresden
  • ChronoRecord Association
  • Dalhousie University
  • Ullevål University Hospital
  • National and Kapodistrian University of Athens
  • Ospedale Universitario di Cagliari
  • University of Adelaide
  • Universidad del País Vasco
  • Northwestern University, Evanston
  • University of Calgary
  • Johann Wolfgang Goethe-Universität Frankfurt am Main
  • Universität zu Köln
  • Université Paris Diderot
  • FondaMental Fondation
  • Ben-Gurion University of the Negev
  • Deakin University
  • University of Melbourne
  • Rikshospitalet University Hospital
  • Universitetet i Oslo
  • Università degli Studi di Siena
  • Azienda Ospedaliera Universitaria Senese
  • Castle Peak Hospital
  • Università degli Studi di Cagliari
  • Université Paris-Est
  • Mayo Clinic
  • Aristotle University of Thessaloniki
  • Stanford University
  • Tokyo Metropolitan Matsuzawa Hospital
  • Helsingin yliopisto
  • Finnish National Institute for Health and Welfare
  • Universidade Federal do Rio Grande do Sul
  • Uniwersytet Medyczny im. Karola Marcinkowskiego w Poznaniu
  • BIPOLAR Zentrum Wiener Neustadt
  • Aarhus University Hospital
  • Universidad de Antioquia
  • University of Massachusetts Medical School
  • Michigan State University
  • St. Olavs Hospital Universitetssykehuset i Trondheim
  • Norges Teknisk-Naturvitenskapelige Universitet
  • University of California at San Diego
  • Universidade de São Paulo
  • Diego Portales University
  • University of Cape Town
  • University of Missouri–Kansas City
  • Universidade Federal da Bahia
  • Universidad Favaloro
  • University of Malaya
  • City of Helsinki
  • Tokyo Metropolitan Institute of Medical Science
  • Universitat Autònoma de Barcelona
  • National Institute of Mental Health and Neurosciences
  • Chapman University
  • University of California Los Angeles

Research output: Contribution to journal › Article › peer-review

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Abstract

Background: Environmental conditions early in life may imprint the circadian system and influence response to environmental signals later in life. We previously determined that a large springtime increase in solar insolation at the onset location was associated with a younger age of onset of bipolar disorder, especially with a family history of mood disorders. This study investigated whether the hours of daylight at the birth location affected this association.
Methods: Data collected previously at 36 collection sites from 23 countries were available for 3896 patients with bipolar I disorder, born between latitudes of 1.4N and 70.7N, and 1.2S and 41.3S. Hours of daylight variables for the birth location were added to a base model to assess the relation between the age of onset and solar insolation.
Results: More hours of daylight at the birth location during early life was associated with an older age of onset, suggesting reduced vulnerability to the future circadian challenge of the springtime increase in solar insolation at the onset location. Addition of the minimum of the average monthly hours of daylight during the first 3 months of life improved the base model, with a significant positive relationship to age of onset. Coefficients for all other variables remained stable, significant and consistent with the base model.
Conclusions: Light exposure during early life may have important consequences for those who are susceptible to bipolar disorder, especially at latitudes with little natural light in winter. This study indirectly supports the concept that early life exposure to light may affect the long term adaptability to respond to a circadian challenge later in life.
Original languageEnglish
JournalJournal of Psychiatric Research
VolumeIn Press
Early online date27 Mar 2015
DOIs
Publication statusPublished - 2015

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Journal of psychiatric research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Bauer, M., Glenn, T., Alda, M., Andreassen, O. A., Angelopoulos, E., Ardau, R., ... Whybrow, P. C. (2015). Influence of light exposure during early life on the age of onset of bipolar disorder. Journal of psychiatric research, In Press (2015) DOI http://dx.doi.org/10.1016/j.jpsychires.2015.03.013

Keywords

  • bipolar disorder
  • hours of daylight
  • insolation
  • sunlight
  • age of onset

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