Vegetables, unsaturated fats, moderate alcohol intake, and mild cognitive impairment

Rosebud O Roberts1, Yonas E Geda, James R Cerhan

  • 1Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic, Rochester, MN 55905, USA. roberts.rosebud @ mayo.edu

Abstract

Insights

Adhering to the Mediterranean diet, rich in vegetables and unsaturated fats, may help preserve cognitive function and reduce the risk of mild cognitive impairment (MCI) in older adults.

Area of Science:

  • Nutritional Neuroscience
  • Gerontology
  • Epidemiology

Background:

  • Mild cognitive impairment (MCI) is a growing concern in aging populations.
  • Understanding modifiable risk factors like diet is crucial for cognitive health.
  • The Mediterranean diet (MeDi) is associated with various health benefits, but its specific impact on MCI requires further investigation.

Purpose of the Study:

  • To examine the relationship between components of the Mediterranean diet (MeDi) and the overall MeDi score with the prevalence of mild cognitive impairment (MCI).

Main Methods:

  • A cohort of 1,233 non-demented individuals aged 70-89 years was assessed for MCI and dementia.
  • Dietary intake was evaluated using a 128-item food frequency questionnaire.
  • Statistical analyses adjusted for potential confounding factors.

Main Results:

  • 163 participants were diagnosed with MCI.
  • High intake of vegetables was associated with reduced odds of MCI (OR=0.66, P=0.05).
  • A higher ratio of unsaturated to saturated fatty acids correlated with lower MCI odds (OR=0.52, P=0.007).
  • A high MeDi score showed a trend towards reduced risk of incident MCI or dementia (HR=0.75, P=0.24).

Conclusions:

  • Specific components of the Mediterranean diet, namely vegetables and unsaturated fats, appear protective against mild cognitive impairment.
  • A higher adherence to the Mediterranean diet may support cognitive function in older adults.

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