What happens to the brain when you eat peanuts daily? New study reveals striking results
Does eating peanuts every day help to maintain memory as we get older?
A recent study published in the journal Food & Function reveals that consuming peanuts daily may improve brain function in older adults. Researchers from Maastricht University in the Netherlands conducted the experiment on 31 healthy individuals aged 60 to 75 years, who ate 60 grams of roasted peanuts with skins and no salt for 16 weeks. The study aimed to examine the impact of regular peanut consumption on the brain's response to insulin in memory-related areas as people age.
The participants' brain activity was measured by injecting insulin through their noses and using magnetic resonance imaging to observe changes in blood flow to specific brain regions. These areas included parts of the hippocampus, parahippocampal gyrus, lingual gyrus, and posterior cingulate gyrus, all of which are involved in memory processes and cognitive functions.
Insulin plays a role in various brain processes linked to learning, memory, and nerve cell communication, and its effectiveness may decrease with age, potentially contributing to cognitive decline.
Although the study did not prove that eating peanuts prevents cognitive decline or dementia, it did observe changes in the response of certain brain regions to insulin. Previous research by the same team showed a 3.6% increase in total brain blood flow and a 5.8% improvement in verbal memory after the 16-week period. The researchers believe that peanuts' nutritional composition, which includes unsaturated fats, fiber, vitamins, minerals, plant compounds, and the amino acid L-arginine, may be responsible for these effects.
L-arginine is used by the body to produce nitric oxide, which aids blood vessel regulation and may be linked to learning and memory processes.
However, further research is needed to determine the extent to which the observed changes in brain insulin response translate to memory and mental performance improvements. The study's limited participant pool of 31 and the observed indicators are not enough to conclusively state that peanuts protect against Alzheimer's or other dementia disorders. Larger studies following participants over longer periods would be necessary to confirm these potential benefits and assess their long-term effects.
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