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Lifetime affect and midlife cognitive function: prospective birth cohort study.

M Richards1, J H Barnett, M K Xu

  • 1M. Richards, PhD, MRC Unit for Lifelong Health and Ageing, University College London; J. H. Barnett, PhD, Department of Psychiatry, University of Cambridge, and Cambridge Cognition Ltd, Cambridge; M. K. Xu, PhD, Department of Psychiatry, University of Cambridge, Cambridge; T. J. Croudace, PhD, Department of Health Sciences and Hull York Medical School, University of York, York; D. Gaysina, PhD, School of Psychology, University of Sussex, Falmer; D. Kuh, PhD, MRC Unit for Lifelong Health and Ageing, University College London; P. B. Jones, MD, PhD, Department of Psychiatry, University of Cambridge, Cambridge, UK, and the MRC National Survey of Health and Development scientific and data collection team.

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Summary
This summary is machine-generated.

Recurrent affective problems are linked to self-reported memory issues in late midlife. However, these symptoms did not predict objective cognitive decline in this population.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Gerontology

Background:

  • Recurrent affective problems may precede cognitive impairment, but the precise relationship remains unclear.
  • Understanding the link between mood disorders and cognitive decline is crucial for early intervention.

Purpose of the Study:

  • To investigate the prospective association between life-course affective symptoms and cognitive function in late middle age.
  • To clarify the directionality and nature of cognitive impairment linked to affective issues.

Main Methods:

  • Utilized data from the Medical Research Council National Survey of Health and Development (British 1946 birth cohort).
  • Assessed longitudinal affective symptoms (ages 13-53) as predictors.
  • Measured cognitive outcomes including self-reported memory problems and objective cognitive decline (ages 53-64).

Main Results:

  • Longitudinal affective symptoms showed no significant association with decline in cognitive test scores after adjusting for covariates.
  • Affective symptoms were strongly and independently associated with self-reported memory problems in late midlife.

Conclusions:

  • Affective symptoms are more strongly linked to subjective memory complaints than to objectively measured cognitive performance in late midlife.
  • This suggests a potential disconnect between perceived memory difficulties and actual cognitive decline in individuals with a history of affective problems.