A new study published in Clinical Nutrition has found that consuming unsalted, skin-roasted peanuts daily may improve brain vascular function and memory in older adults. Researchers from Maastricht University designed a randomized, single-blind, controlled crossover trial involving 31 healthy older adults aged 60-75 years.
The participants consumed 60 grams of unsalted, skin-roasted peanuts daily for 16 weeks, while the control group refrained from eating peanuts during the same period. The study used non-invasive imaging to assess cerebral blood flow and cognitive performance.
The results showed a significant improvement in brain vascular responsiveness following peanut consumption. Global cerebral blood flow increased by 3.6 percent compared to the control period. Specifically, gray matter saw a 4.5 percent increase in blood flow, with improvements observed in the frontal and temporal lobes.
Cognitive function also improved, with participants demonstrating a 5.8 percent increase in verbal memory performance. Additionally, systolic blood pressure decreased by an average of 5 mmHg during the peanut consumption phase.
The researchers attribute these findings to the high content of L-arginine in peanuts, as well as the antioxidant properties of the skin and fiber. The study suggests that eating unsalted, skin-roasted peanuts daily may support brain health as we age. Future research directions include investigating different forms of peanut products and exploring the dose-response relationship.
Key Takeaways:
* Consuming unsalted, skin-roasted peanuts daily may improve brain vascular function and memory in older adults.
* A significant increase in global cerebral blood flow was observed following peanut consumption.
* Cognitive performance improved, particularly in verbal memory tasks.
* The study provides evidence for the potential neuroprotective benefits of peanuts, which are rich in protein, unsaturated fatty acids, and fiber.
Source: https://www.psypost.org/this-common-snack-enhanced-memory-and-brain-vascular-function-in-a-16-week-trial