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In Association with
Low birth weight and risk of neuroticism and mood disorder in 83,545 participants of the UK Biobank cohort
3rd International Conference on Epidemiology & Public Health
Donald M Lyall
ScientificTracks Abstracts: Epidemiology (Sunnyvale)
Abstract
Background: Low birth weight has been inconsistently associated with risk of developing affective disorders, including major
depressive disorder (MDD). To date, studies investigating possible associations between birth weight and bipolar disorder
(BD), or personality traits known to predispose to affective disorders - such as neuroticism - have not been conducted in
large cohorts. In the UK Biobank cohort, we assessed whether low or very-low birth weight (1,500 g-2,490 g and <1,500 g,
respectively) were associated with higher neuroticism scores in middle age, and/or lifetime history of either MDD or BD.
Methods: We controlled for possible confounding factors including year of birth, gender, maternal smoking and depression,
ethnicity, socioeconomic status, and also potentially mediating physical disorders such as hypertension, in 83,545 participants
with relevant data.
Results: Referent to normal birth weight, very-low/low birth weight were associated with higher neuroticism scores (b range =
0.21-0.31 inventory points), increased MDD in unadjusted and adjusted analyses (relative risk ratio range = 1.05 to 1.32), and
BD (relative risk ratio range = 1.10 to 1.74). The associations between birth weight category and MDD were partially mediated
by higher neuroticism.
Conclusion: Low/very-low birth weight was significantly associated with neuroticism, MDD and BD in adulthood, with
evidence of a dose effect across low and very-low birth weight. These findings suggest that intra-uterine programming may
play a role in lifetime vulnerability to affective disorders.
Biography
Donald M Lyall is a Research Associate in Epidemiology at the Institute for Lifelong Health and Wellbeing, University of Glasgow. He completed his PhD at the
University of Edinburgh, supervised by Prof. Ian Deary, Prof. David Porteous, and Prof. Joanna Wardlaw, and has previously worked as a Postdoctoral Research
Fellow in cognitive neuroscience at the National Institute on Aging, NIH, Baltimore USA, and as an Assistant Clinical Psychologist at NHS Greater Glasgow and
Clyde. His main research interests are in Epidemiology, Dementia, Neuroscience and Psychiatric disorders.
