Mixing 50 grams of walnuts with muesli and yogurt increased faster reaction times throughout the day, and later in the day, according to a team of scientists at USDA Human Nutrition Research Center, a reading university at Tufts University's Aging, which improved memory performance later that day compared to eating a breakfast that suited comparable calories.
Eating walnuts for breakfast can improve brain function in healthy young adults. Image credit: Tim Ulama.
“Diet is one of the most important lifestyle factors that strongly affect cognitive function,” says Professor Claire Williams of the University of Reading and a colleague.
“Therefore, a balanced diet rich in nutrients can improve cognitive function throughout your life.”
“One of the class of foods linked to beneficial cognitive health is the nut family, and several epidemiological studies highlight the positive relationship between regular nut consumption and cognitive function.”
“For example, epidemiological studies, such as the Doetinchem Cohort study, found that levels of nut consumption were positively predicted for memory, processing speed, cognitive flexibility, and global cognitive function in middle-aged adults.
“Preclinical studies have also demonstrated the cognitive benefits of walnut supplementation.”
“Rodent studies have shown that walnuts promote improved working memory performance on Morris' water maze tasks and improve learning and memory performance in elevated and radial arm mazes.”
“The cognitive benefits of walnuts can be due to certain nutrients, as they are known to be high in omega-3 fatty acids, protein/peptides, and flavonoids and polyphenol classes,” they added.
“The main purpose of our study was to determine the cognitive and mood effects of acute consumption of walnut-rich breakfasts in healthy young adults throughout the day, and secondly, to investigate the potential neurological and physiological mechanisms that explain the benefits of cognitive.”
In this study, 32 healthy young adults ages 18-30 consumed both walnut-rich and matched breakfasts on separate occasions.
Participants completed various cognitive tests while monitoring brain activity 6 hours after eating each breakfast.
“Breakfast and some walnuts can give young adults a mental advantage when they need to play at the top of the game,” Professor Williams said.
“It's particularly exciting that this simple diet can make a measurable difference in cognitive performance.”
Brain activity records revealed changes in neural activity suggesting that walnuts may help the brain work more efficiently during challenging mental tasks, and blood samples revealed positive changes in glucose and fatty acid levels.
“Our findings provide evidence of the benefits of reaction time throughout the day after a walnut-rich breakfast, but memory findings were mixed with benefits observed only later in the day,” the researchers said.
“However, more research is needed on how walnut-containing diets modulate cognitive improvement in humans both postpartum and long-term.”
result Published in the journal Food and Function.
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L. Bell et al. The effect of walnut-rich breakfast on daily cognitive performance and brain activity in healthy young adults: a crossover intervention trial. Food functionsPublished online on February 3, 2025. doi:10.1039/d4fo04832f
Source: www.sci.news
