外周动脉疾病（PAD）主要表现为四肢动脉粥样硬化导致血流受阻。
根据美国心脏协会（AHA）及全球血管医学研究，饮食干预的核心在于“促进一氧化氮合成、抑制血小板聚集与降低血脂”。
科学原理是利用食物中的硝酸盐扩张狭窄血管，通过Omega-3脂肪酸和抗氧化多酚减轻内皮炎症。
这些营养素能够改善下肢循环，缓解间歇性跛行疼痛，降低因血管闭塞引发的严重心血管事件风险。
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甜菜根 Beetroot |
天然硝酸盐，扩张血管改善流速。Rich in nitrates that convert to nitric oxide, dilating arteries and improving limb blood flow. |
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核桃 Walnuts |
改善内皮功能，增加动脉弹性。Alpha-linolenic acid (ALA) helps maintain the flexibility of peripheral arterial walls. |
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三文鱼 Salmon |
降低甘油三酯，预防血栓形成。Omega-3 fatty acids decrease blood viscosity and inhibit plaque buildup in leg arteries. |
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大蒜Garlic |
抑制血小板粘附，降低血管阻力。Allicin compounds improve circulation and reduce systemic vascular resistance. |
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姜黄 Turmeric |
姜黄素抗炎，减缓斑块进展。Curcumin has anti-inflammatory properties that slow down the progression of atherosclerosis. |
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橙子 Oranges |
维生素C修复内皮，支持胶原蛋白。Vitamin C promotes vascular structural health and prevents oxidative damage to blood vessels. |
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燕麦Oats |
可溶性纤维，降低血清胆固醇。Beta-glucan binds to cholesterol, preventing it from depositing on arterial walls. |
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菠菜 Spinach |
叶酸降低同型半胱氨酸水平。High folate content helps lower levels of homocysteine, a risk factor for PAD. |
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石榴 Pomegranate |
极强抗氧化，促进微循环。 Rich in polyphenols that clear free radicals and stimulate nitric oxide synthesis. |
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黑巧克力 Dark Chocolate |
黄烷醇改善行走距离与耐力。 Flavanols increase blood flow to calves, helping patients walk longer without pain. |
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