Journal article

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

M Bauer, T Glenn, M Alda, OA Andreassen, E Angelopoulos, R Ardau, C Baethge, R Bauer, BT Baune, F Bellivier, RH Belmaker, M Berk, TD Bjella, L Bossini, Y Bersudsky, EY Wo Cheung, J Conell, M Del Zompo, S Dodd, B Etain Show all

Journal of Psychiatric Research | Published : 2015

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 bi..

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