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Adherence to Mediterranean diet and subjective cognitive function in men.

Ambika Bhushan1,2, Elinor Fondell3, Alberto Ascherio4,3

  • 1Harvard Medical School, 25 Shattuck Street, Boston, MA, 02115, USA. ambika.bhushan@gmail.com.

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|November 18, 2017
PubMed
Summary

Long-term adherence to the Mediterranean diet is linked to better subjective cognitive function. This healthy eating pattern may help prevent or delay cognitive decline in men.

Keywords:
Alzheimer’s diseaseMediterranean dietMild cognitive impairmentSubjective cognitive declineSubjective cognitive function

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Area of Science:

  • Nutrition Science
  • Epidemiology
  • Cognitive Health

Background:

  • Previous studies suggest Mediterranean diet benefits cognition but were limited by size and duration.
  • Assessing long-term adherence to dietary patterns and cognitive function is crucial for understanding preventative strategies.

Purpose of the Study:

  • To prospectively examine the association between long-term Mediterranean diet adherence and self-reported subjective cognitive function (SCF).

Main Methods:

  • Prospective observational study within the Health Professionals' Follow-up Study cohort (n=27,842 men).
  • Mediterranean diet (MD) score calculated from food frequency questionnaires (1986-2002).
  • Self-reported SCF assessed in 2008 and 2012, validated with APOE4 genetic variants.

Main Results:

  • Men in the highest MD score quintile had 36% lower odds of poor SCF and 24% lower odds of moderate SCF compared to the lowest quintile.
  • Both remote and recent dietary intake contributed to the observed association.
  • Associations remained significant even when using baseline diet data with a 22-year lag.

Conclusions:

  • Long-term adherence to the Mediterranean diet pattern is strongly associated with better subjective cognitive function.
  • These findings support the role of healthy dietary patterns in preventing or delaying cognitive decline.