Objective:

To investigate the association between adherence to the Mediterranean diet and levels of mitochondrial microproteins and oxidative stress markers in older patients with atrial fibrillation, highlighting the significance of oxidative stress in cardiovascular health.

Key Findings:

• High adherence to the Mediterranean diet was linked to higher levels of SHMOOSE and Humanin, with significant associations noted.
• Higher SHMOOSE levels correlated with daily olive oil consumption and limited white bread intake.
• Humanin levels were associated with olive oil, fish, and legume consumption, with significant correlations.
• Humanin levels were inversely related to oxidative stress markers, with one association remaining significant after adjustments.

Interpretation:

Adherence to a Mediterranean diet may enhance mitochondrial signaling and reduce oxidative stress, potentially contributing to its cardioprotective effects, with implications for dietary recommendations.

Limitations:

• Cross-sectional design limits causal inference.
• Small sample size may affect generalizability.
• Diet assessment may not fully capture overall eating patterns, including recall bias.
• Limited plasma samples restricted measurement of additional microproteins.

Conclusion:

The findings suggest that mitochondrial microproteins may serve as biomarkers for the Mediterranean diet's effects on health and longevity, highlighting potential avenues for precision nutrition in aging and the need for further research.

Sources:

• Frontiers in Nutrition