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Impaired cognitive functioning during spontaneous dieting

M W Green1, P J Rogers

  • 1Department of Consumer Sciences, Institute of Food Research, Reading Laboratory, Berks.

Psychological Medicine
|September 1, 1995
PubMed
Summary
This summary is machine-generated.

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Dieting impairs cognitive functions like vigilance and memory in women. These effects, including slower reaction times, are linked to the act of dieting itself, not just psychological factors.

Area of Science:

  • Cognitive Psychology
  • Behavioral Neuroscience
  • Dieting and Health

Background:

  • Dieting is common among normal-weight women.
  • Previous research suggests potential cognitive impacts of dieting.

Purpose of the Study:

  • To investigate the effects of dieting on cognitive performance in normal-weight women.
  • To determine if cognitive deficits are associated with the act of dieting or psychological states.

Main Methods:

  • Comparison of cognitive performance in normal-weight female dieters across two sessions, 3 weeks apart.
  • Assessment included vigilance, reaction time, word recall, and a low processing load tapping task.
  • Self-report measures assessed dietary restraint, anxiety, and depression.

Related Experiment Videos

Main Results:

  • Dieting was associated with poorer vigilance, slower reaction times, and impaired immediate word recall.
  • Cognitive performance on a low processing load task remained unaffected.
  • Dietary restraint increased during dieting, while anxiety and depression levels did not significantly change.

Conclusions:

  • Dieting behavior is linked to increased distractibility and cognitive deficits.
  • These cognitive impairments are directly related to the act of dieting or the perceived need to diet.