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In the journey of life, exploring the complexities of aging biology might reveal ways to extend our lifespan and improve our well-being as we grow older. A recent study dives into this area, linking the speed of brain aging to the value of our diets.
Researchers from the University of Illinois and the University of Nebraska Lincoln conducted a study with 100 volunteers aged between 65 and 75. Their goal was to compare brain scans with the habits of these individuals, aiming to find connections between diets and a slower rate of brain aging.
The study uncovered two patterns of brain aging. Interestingly, a slower pace of aging seemed to be associated with choices similar to those found in the Mediterranean diet, which has been praised in previous studies for its numerous health benefits.
Neuroscientist Aron Barbey from the University of Illinois explained their approach by saying, “We examined markers like fatty acids that are known in nutritional science for their potential health advantages.” This method aligns well with existing research highlighting the effects of the Mediterranean diet, known for its focus on foods, on these beneficial nutrients.The researchers took a step by not relying on the participants self-reported diet information. Instead, they examined blood samples to look for biomarkers, which are reliable indicators of the dietary habits of the elderly group.
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They identified biomarkers such as fatty acids found in fish and olive oil, antioxidants like vitamin E found in spinach and almonds, and carotenoids found in carrots and pumpkin known for their inflammatory properties. Choline, abundant in egg yolks, organ meats, and raw soybeans, also emerged as a biomarker linked to brain aging.
To measure brain aging, the researchers used MRI brain scans and cognitive tests. This comprehensive approach assessed both abilities and the detailed neuronal structure.
“This multi-dimensional method helps us gain an understanding of how these factors interact,” explained Barbey. “We examine brain structure, function, and metabolism simultaneously to reveal a connection between these brain characteristics and cognitive abilities.” There is increasing evidence highlighting the impact of nutrition on the aging process of the brain.Each new study adds a piece to the puzzle, revealing the connections between the brain and the body.
While this research gives us a snapshot of the situation, it doesn’t fully establish cause-and-effect relationships. However, similar conclusions were reached in a 2023 study that followed participants for 12 years. Found a link between the Mediterranean diet and reduced cognitive decline.
Looking forward, the team plans to explore long-term trials to uncover how diet and nutrition affect brain aging over time. Simple changes in diet could potentially lower the risk of diseases like Alzheimer’s.
“This study highlights patterns that show promise with positive links to cognitive performance and brain health,” Barbey explains, indicating an exciting path for future research.
