Mediterranean Diet Nutrients Linked to Slower Brain Ageing

Photo byPhoto by Milad Fakurian on Unsplash

Researchers from the University of Illinois and the University of Nebraska-Lincoln conducted a study involving 100 volunteers aged 65 to 75 to investigate the relationship between nutrient intake and brain ageing. Instead of relying on self-reported diets, they analyzed blood samples for nutrient biomarkers associated with specific dietary components.

They identified two distinct brain ageing patterns, noting that slower ageing was linked to nutrient profiles resembling those found in the Mediterranean diet, known for its health benefits. These profiles included fatty acids from fish and olive oil, antioxidants like vitamin E from spinach and almonds, carotenoids from carrots and pumpkin, and choline from egg yolks, organ meats, and soybeans.

The researchers used MRI brain scans and cognitive assessments to assess brain structure, function, and metabolism, providing insights into how these factors relate to cognitive abilities. They found direct correlations between nutrient biomarkers and measures of brain health, suggesting that diet plays a crucial role in cognitive ageing.

While the study provides compelling evidence, it was observational and cannot establish cause and effect. However, its findings align with previous research, including a 2023 study that linked the Mediterranean diet to reduced cognitive decline over 12 years.

Looking ahead, the researchers aim to conduct clinical trials over more extended periods to explore how dietary interventions could impact brain ageing and reduce the risk of neurodegenerative diseases like Alzheimer's. Based on the identified nutrient biomarker patterns, they emphasize the potential of dietary modifications to support cognitive performance and brain health.

Overall, the study underscores the importance of nutrition in healthy ageing and highlights the Mediterranean diet as a beneficial dietary pattern for maintaining cognitive function and brain health in older adults.