Prenatal and early life factors and risk of Parkinson's disease

Authors

  • Hannah Gardener,

    Corresponding author
    1. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
    • Department of Neurology, University of Miami Miller School of Medicine, PO Box 016960 (M-877), Miami, FL 33101
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  • Xiang Gao,

    1. Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts, USA
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  • Honglei Chen,

    1. Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
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  • Michael A. Schwarzschild,

    1. Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
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  • Donna Spiegelman,

    1. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
    2. Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, USA
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  • Alberto Ascherio

    1. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
    2. Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts, USA
    3. Channing Laboratory, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
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  • Potential conflicts of interest: The authors have no conflicts of interest, financial, or otherwise, to disclose.

Abstract

Few studies have investigated the relation between early life factors and risk of Parkinson's disease (PD), although a potential role of exposures during pregnancy and childhood has been hypothesized. The study population comprised participants in two prospective cohorts: the Nurses' Health Study (121,701 female nurses followed up from 1976–2002) and the Health Professionals Follow-up Study (51,529 male health professionals followed up from 1986–2002). PD risk was examined in relation to season of birth, birthweight, parental age at birth, preterm birth, multiple birth, ever having been breast-fed, and handedness. We identified 659 incident PD cases. No significant relation with PD was observed for birthweight, paternal age, preterm birth, multiple birth, and having been breast-fed. A modest nonsignificant association was suggested for season of birth (30% higher risk of PD associated with spring versus winter birth) and for older maternal age at birth (75% increased risk among those with mothers aged 30 years and older versus younger than 20 years). Left-handedness was associated with a 62% increased risk of PD in women but not in men. Further investigation of the relation between prenatal, perinatal, or neonatal factors and PD in other study populations is suggested. © 2010 Movement Disorder Society

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