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Updated: Jun 18, 2026

A Method for Manipulating Blood Glucose and Measuring Resulting Changes in Cognitive Accessibility of Target Stimuli
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A Method for Manipulating Blood Glucose and Measuring Resulting Changes in Cognitive Accessibility of Target Stimuli

Published on: August 12, 2016

Overweight and cognition.

Lars-Göran Nilsson1, Erik Nilsson

  • 1Department of Psychology, Stockholm University, Sweden. lgn@psychology.su.se

Scandinavian Journal of Psychology
|November 26, 2009
PubMed
Summary
This summary is machine-generated.

Overweight is linked to cognitive decline, particularly in semantic memory, even after accounting for obesity-related diseases like diabetes and hypertension. This weight-cognition relationship persists across different age groups.

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Last Updated: Jun 18, 2026

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Published on: August 12, 2016

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Published on: June 21, 2019

Area of Science:

  • Neuroscience
  • Public Health
  • Gerontology

Background:

  • Rising rates of overweight and obesity in Western populations are a significant public health concern.
  • Obesity is associated with increased risk of chronic diseases and premature mortality.
  • The impact of overweight and obesity on cognitive function, independent of related diseases, requires further investigation.

Purpose of the Study:

  • To investigate the association between overweight and cognitive function across three domains: episodic memory, semantic memory, and spatial ability.
  • To determine if the relationship between overweight and cognition is independent of obesity-related diseases.
  • To examine how body mass index and waist/hip ratio relate to cognitive performance.

Main Methods:

  • Utilized data from a large, population-based, prospective study.
  • Assessed cognitive function in episodic memory, semantic memory, and spatial ability.
  • Defined normal weight and overweight using body-mass index and waist/hip ratio, controlling for hypertension, stroke, and diabetes.

Main Results:

  • Overweight was associated with poorer semantic memory performance compared to normal weight, even after controlling for major diseases.
  • An age-overweight interaction was observed for episodic memory, which disappeared when controlling for hypertension, stroke, and diabetes.
  • Gender differences in spatial ability varied by weight status and age group.

Conclusions:

  • A significant weight-cognition relationship exists, independent of common obesity-related diseases.
  • Overweight status impacts specific cognitive domains, particularly semantic memory.
  • Further research into biological mechanisms underlying the weight-cognition link is warranted.