The impact of a walnut-rich breakfast on cognitive performance and brain activity throughout the day in healthy young adults: a crossover intervention trial
Bell L, Dodd GF, Jeavons M, Fisher DR, Whyte AR, Shukitt-Hale B, Williams CM
Food & function · 6 citas
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Alimentación controladaFinanciación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
- Consumo medido con
- Comida provista por los investigadores
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 2025-01-01 · Food Funct · vol. 16 · número 5 · págs. 1696–1707
- Editorial
- Royal Society of Chemistry
- Citado
- 14 citas · más que el 98% de estudios similares · 7.8× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 61 trabajos
- Acceso
- Acceso abierto (revista híbrida) · CC-BY
- Áreas de investigación
- Nuts composition and effects · Fatty Acid Research and Health · Nutritional Studies and Diet
- Palabras clave
- Juglans regia, breakfast, cognitive performance, executive function, memory retrieval, reaction time, mood, negative affect, EEG, free fatty acids, glucose availability, postprandial effects, healthy young adults, diet and brain health
- MeSH
- brain, humans, juglans, nuts, electroencephalography, pilot projects, cross-over studies, double-blind method, affect, cognition, adolescent, adult, female, male, young adult, executive function, breakfast
7 autores
- L. Bell🇬🇧University of Reading
- Georgina F. Dodd🇬🇧University of Reading
- M. Jeavons🇬🇧University of Reading
- D. R. Fisher🇺🇸Tufts University
- Adrian Robert Whyte🇬🇧University of Winchester
- Barbara Shukitt‐Hale🇺🇸Tufts University
- Claire Michelle Williams🇬🇧 · autor de correspondenciaUniversity of Reading
Resumen
El texto original del estudio, en el idioma en que se publicó.
A healthy diet is essential for optimal brain health and many bioactives from food are linked to cognitive benefits. To examine whether walnuts led to cognitive improvements throughout the day, 32 healthy young adults, aged 18-30, were tested in a double-blind, crossover pilot study, to compare the effects of a breakfast containing 50 g walnuts with a calorie-matched control containing no nuts. Cognition, mood, blood, and EEG measures were recorded at baseline and 2, 4, and 6 hours postprandially. Mood ratings for negative affect appeared worse following walnuts compared to control, possibly due to a general dislike of the intervention. However, walnuts elicited faster reaction times throughout the day on executive function tasks. Memory recall performance at 2 hours was worse for walnuts compared to control, but by 6 hours this finding was reversed with walnuts outperforming the control. EEG PSD analysis revealed differences in frontoparietal activity in the walnut condition compared to the control condition during memory recall and during executive function performance. These results may reflect between-treatment differences in cognitive effort or attentional processes while performing the tasks. Blood analysis revealed lower circulating non-esterified fatty acids and small increases in glucose availability following consumption of walnuts compared to control, suggesting enhanced glucose availability as one possible mechanism of action. Further investigations of other potential mechanisms are needed. Overall, these findings provide evidence for reaction time benefits throughout the day following a walnut-rich breakfast, while memory findings were mixed with benefits only observed later in the day. However, more research is needed into how diets containing walnuts might regulate cognitive improvements in humans postprandially and over the longer term.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial (CC BY).
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