Peripheral artery disease (PAD) is a circulatory condition characterized by narrowing and reduced flexibility of peripheral arteries, most commonly affecting blood flow to the legs and feet. The condition is strongly associated with endothelial dysfunction, oxidative stress, inflammatory signaling, impaired nitric oxide production, vascular calcification, lipid oxidation, and reduced arterial elasticity. Reduced circulation may contribute to leg discomfort during walking, cold extremities, muscle fatigue, slow wound healing, decreased tissue oxygenation, and diminished exercise tolerance. The vascular endothelium plays a central role in PAD progression. Endothelial cells regulate nitric oxide production, blood vessel dilation, inflammatory signaling balance, platelet interactions, oxidative defense activity, and vascular permeability. Chronic oxidative burden and inflammatory stress may impair nitric oxide bioavailability while promoting vascular stiffness, lipid oxidation, inflammatory cytokine activation, and endothelial injury. Oxidized lipoproteins, inflammatory mediators, and impaired mitochondrial metabolism may contribute to vascular narrowing and reduced peripheral circulation. A whole food plant-based dietary pattern emphasizing nitrate-rich vegetables, antioxidant-rich fruits, legumes, herbs, seeds, and fiber-dense whole foods may help support endothelial function, vascular flexibility, nitric oxide pathways, antioxidant defense systems, inflammatory balance, and healthy circulation. Plant foods naturally contain polyphenols, flavonoids, anthocyanins, carotenoids, nitrates, sulfur compounds, catechins, and mineral cofactors involved in vascular regulation and oxidative defense. Beetroot, spinach, kale, pomegranate, blueberry, garlic, tomato, green tea, flax seeds, walnuts, broccoli, citrus fruits, and legumes provide compounds associated with nitric oxide support, endothelial signaling, mitochondrial protection, inflammatory regulation, and vascular resilience. Dietary fiber may also support cholesterol metabolism, glycemic stability, gut microbiome signaling, bile acid metabolism, and metabolic pathways associated with cardiovascular health. Nitric oxide signaling pathways are particularly important in PAD because nitric oxide supports vasodilation, blood vessel relaxation, endothelial communication, and oxygen delivery. Polyphenols and nitrate-containing vegetables may help support nitric oxide availability while reducing oxidative degradation of endothelial signaling molecules. Antioxidant-rich whole foods may additionally support mitochondrial function, vascular tissue repair systems, and inflammatory balance associated with peripheral circulation support. Reducing processed foods, minimizing oxidized fats, avoiding excessive sodium intake from processed products, maintaining hydration, and emphasizing colorful whole plant foods may help support vascular integrity, circulation efficiency, endothelial protection, and long-term cardiovascular resilience.