Investigating the Link Between Diet and Peripheral Artery Disease

Overview of Peripheral Artery Disease

Researchers have explored the relationship between dietary patterns, nutrients, and trans fatty acids in connection with the risk of developing peripheral artery disease (PAD). While several well-known risk factors exist for PAD—including smoking, high cholesterol, high blood pressure, and diabetes—there is limited understanding of how diet influences this condition.

Study Background and Purpose

Few studies have specifically examined the role of nutrients in PAD, often focusing on individual nutrients or food groups. This limitation hampers the ability to grasp the intricate interactions between various dietary components. To address this gap, researchers in China published a study in the journal *Lipids in Health and Disease*, aiming to identify the associations between dietary patterns, vitamin levels, and trans fatty acids in relation to PAD risk.

Methodology

The study analyzed data from the National Health and Nutrition Examination Surveys conducted in the United States from 1999 to 2002. Researchers gathered demographic and biochemical data through in-home questionnaires and mobile examination units. The analysis included 4,864 participants, of whom 269 had been diagnosed with peripheral artery disease.

Findings on Dietary Patterns

The researchers identified three distinct dietary patterns that accounted for variations in nutrient consumption:
– **Dietary Pattern 1 (DP1):** Characterized by high intake of saturated fat, total fat, cholesterol, and mono-unsaturated fatty acids.
– **Dietary Pattern 2 (DP2):** Focused on minerals, vitamins, and fiber.
– **Dietary Pattern 3 (DP3):** Comprised of polyunsaturated fatty acids.

After adjusting for clinical and demographic factors, the analysis revealed that men without PAD had a higher intake of essential nutrients, vitamins, fiber, and polyunsaturated fatty acids compared to those with PAD. Additionally, there were significant positive associations between higher scores in DP2 and DP3 and reduced disease severity.

Trans Fatty Acids and Vitamin Levels

Patients with peripheral artery disease exhibited increased concentrations of trans fatty acids along with lower levels of vitamin D and vitamin A. The findings suggested that diets abundant in minerals, vitamins, fiber, and polyunsaturated fats are linked to a lower risk of developing PAD, while diets high in trans fatty acids correlate with an increased risk. Participants without PAD demonstrated higher vitamin levels and lower trans fatty acid levels, aligning with previous research on the potential roles of these dietary components in PAD development.

Significance and Limitations

This study represents the largest investigation into the relationship between dietary patterns, trans fatty acids, and peripheral artery disease. The random sampling from a nationally representative population enhances the generalizability of the results to the U.S. population. However, as a cross-sectional study, it has inherent limitations and cannot conclusively establish causation between trans fatty acids and PAD.

Conclusion and Future Directions

Overall, the research highlights significant independent associations between diet, nutrition, and trans fatty acids concerning peripheral artery disease. Future interventional studies are necessary to better evaluate how these dietary factors influence clinical disease progression or potentially delay its onset.

Keywords

Maggie Leung, PharmD

Reference

Mazidi, M., Wong, N. D., Katsiki, N., Mikhailidis, D. P., & Banach, M. (2017). Dietary patterns, plasma vitamins, and trans fatty acids are associated with peripheral artery disease. *Lipids in Health and Disease*, 16(1). doi:10.1186/s12944-017-0635-y