Cognitive function in response to a pecan-enriched meal: a randomized, double-blind, cross-over study in healthy...

Area of Science:

• Nutrition Science
• Cognitive Neuroscience
• Human Health

Background:

• Dietary patterns play a crucial role in cognitive function.
• Nuts, particularly pecans, are rich in beneficial nutrients.
• Understanding the specific cognitive effects of pecan consumption is important for dietary recommendations.

Purpose of the Study:

• To investigate the impact of a pecan-enriched meal on cognitive performance in healthy adults.
• To compare cognitive responses to a pecan-enriched meal versus an isocaloric control meal.

Main Methods:

• A double-blind, randomized crossover trial involving 31 healthy adults.
• Participants consumed either a pecan-enriched shake (PEC) or a high saturated fat control shake (CON).
• Cognitive function, motivation, and sleepiness were assessed at multiple time points post-meal.

Main Results:

• The pecan-enriched meal (PEC) significantly improved performance in measures of attention, processing speed, and memory recall.
• Specific cognitive benefits included enhanced Rapid Visual Information Processing, Choice Reaction Time, Digit Vigilance, and word recall.
• The control meal (CON) showed benefits in word recognition and numeric working memory.

Conclusions:

• Consumption of a pecan-enriched meal demonstrably enhances cognitive performance in healthy adults.
• Pecans positively influenced a greater proportion of cognitive measures compared to the control meal.
• These findings suggest pecans can be a valuable component of a diet supporting cognitive health.