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STUDY OBJECTIVES Evidence from cross-sectional studies shows that sleep is associated with cognitive function. This study examines change in sleep duration as a determinant of cognitive function. DESIGN Prospective cohort. SETTING The Whitehall II study. PARTICIPANTS 1459 women and 3972 men aged 45-69 at baseline. INTERVENTIONS None. MEASUREMENTS(More)
OBJECTIVE To test whether depression is independently associated with elevated levels of C-reactive protein (CRP) in a large nationwide population-based sample. METHODS Depression and CRP were assessed in 6005 Finns aged >30 years, as part of the ongoing population-based Health 2000 Study. Depression was determined by responses to the Beck's Depression(More)
OBJECTIVE To examine the reciprocal associations between depressive symptoms and clinical definitions of the metabolic syndrome in childhood and adulthood. DESIGN Population-based prospective cohort study of 921 participants (538 women and 383 men) in Finland. The components of the metabolic syndrome were measured in childhood (mean age 12 years) and(More)
BACKGROUND A lack of longitudinal studies has made it difficult to establish the direction of associations between circulating concentrations of low-grade chronic inflammatory markers, such as C-reactive protein and interleukin-6, and cognitive symptoms of depression. The present study sought to assess whether C-reactive protein and interleukin-6 predict(More)
BACKGROUND Published work assessing psychosocial stress (job strain) as a risk factor for coronary heart disease is inconsistent and subject to publication bias and reverse causation bias. We analysed the relation between job strain and coronary heart disease with a meta-analysis of published and unpublished studies. METHODS We used individual records(More)
BACKGROUND Little is known about the timing of changes in glucose metabolism before occurrence of type 2 diabetes. We aimed to characterise trajectories of fasting and postload glucose, insulin sensitivity, and insulin secretion in individuals who develop type 2 diabetes. METHODS We analysed data from our prospective occupational cohort study (Whitehall(More)
OBJECTIVE Cognitive reserve is associated with a lower risk of dementia, but the extent to which it shapes cognitive aging trajectories remains unclear. Our objective is to examine the impact of 3 markers of reserve from different points in the life course on cognitive function and decline in late adulthood. METHODS Data are from 5,234 men and 2,220(More)
BACKGROUND Job strain is associated with an increased coronary heart disease risk, but few large-scale studies have examined the relationship of this psychosocial characteristic with the biological risk factors that potentially mediate the job strain - heart disease association. METHODOLOGY AND PRINCIPAL FINDINGS We pooled cross-sectional,(More)
OBJECTIVES To assess the performance of a panel of common single nucleotide polymorphisms (genotypes) associated with type 2 diabetes in distinguishing incident cases of future type 2 diabetes (discrimination), and to examine the effect of adding genetic information to previously validated non-genetic (phenotype based) models developed to estimate the(More)
Temperament, as indicated by Cloninger's psychobiological model predicts coronary heart disease risk, but its association with autonomic cardiac regulation, a potential mediating mechanism, is unclear. We examined the associations between temperament traits and autonomic cardiac regulation in a resting situation in 798 women and 580 men derived from a(More)