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Related Experiment Video

Updated: Oct 10, 2025

Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach
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Soy consumption, cognitive function, and dementia.

Edyta Szczerba1, Manja Koch2, Sabrina Schlesinger1

  • 1Institute for Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf.

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Summary

Soy consumption may reduce dementia risk, with some studies linking higher intake to better cognitive function. More research is needed to confirm these benefits, especially in healthy individuals.

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Area of Science:

  • Nutrition Science
  • Neuroscience
  • Public Health

Background:

  • Growing interest in modifiable risk factors for dementia, including diet.
  • Increasing global prevalence of dementia necessitates research into preventive strategies.
  • Soy is a popular dietary component with potential health implications.

Purpose of the Study:

  • To review existing evidence on the association between soy consumption and dementia risk.
  • To examine the link between soy intake and cognitive function.
  • To clarify the uncertain relationship between soy and cognitive decline.

Main Methods:

  • Systematic literature review of studies investigating soy consumption and cognitive health.
  • Analysis of epidemiological data and clinical trial results.
  • Synthesis of findings on various soy products and their impact on cognition.

Main Results:

  • Some studies indicate a lower risk or prevalence of cognitive impairment with higher total soy product intake.
  • Evidence suggests an inverse association between tofu consumption and cognitive function.
  • Higher soybean intake has been linked to improved cognitive function in certain populations.

Conclusions:

  • The relationship between soy consumption and dementia/cognitive decline remains uncertain due to scarce and contradictory previous studies.
  • Soy offers a high-protein alternative to meat, but its preventive effects require further investigation.
  • Additional research is crucial to determine the safety and efficacy of soy for cognitive health, particularly in healthy populations before disease onset.