Exploring a Potential Causal Link Between Dietary Intake and Chronic Obstructive Pulmonary Disease: A Two-Sample...

Area of Science:

• Nutritional Epidemiology
• Respiratory Medicine
• Genetic Epidemiology

Background:

• Chronic Obstructive Pulmonary Disease (COPD) is a leading cause of morbidity and mortality.
• Early prevention strategies for COPD are crucial for improving patient outcomes and reducing healthcare burden.
• Understanding the role of diet in COPD development is essential for public health initiatives.

Purpose of the Study:

• To investigate the causal relationship between specific dietary intakes and the risk of developing COPD.
• To identify dietary factors that may contribute to or protect against COPD.
• To explore the potential of dietary modifications for early COPD prevention.

Main Methods:

• Two-sample Mendelian randomization analysis was employed to assess the causal effect of 28 dietary intakes on COPD.
• Inverse Variance Weighted (IVW) method was the primary analytical approach.
• Sensitivity analyses including Weighted Median (WM) and MR-Egger methods were used to ensure robustness of findings.

Main Results:

• Increased odds of COPD were associated with higher consumption of green beans (OR=1.381) and pork (OR=2.657).
• Reduced odds of COPD were observed with increased intake of dried fruit (OR=0.481), cereal (OR=0.560), and whole eggs (OR=0.700).
• Statistical significance was confirmed for all identified associations (P < 0.05).

Conclusions:

• Dietary patterns may play a significant role in the etiology of COPD.
• Specific foods like green beans, pork, dried fruit, cereal, and eggs show potential causal links to COPD risk.
• Modifying dietary habits could represent a viable strategy for the early prevention of COPD.