3 种危险的足部症状可能预示着心脏病，心脏病是全球主要的死亡原因。 3 red flag foot symptoms could signal heart disease, a leading global cause of death.

脚部出现 3 种危险症状可能预示着心脏病，心脏病是一种“无声杀手”，每年导致全球 1800 万人死亡。 3 red flag symptoms in feet could signal heart disease, a 'silent killer' causing 18 million global deaths annually. 美国皮肤病学会 (AAD) 指出这些症状包括：1) 异常的颜色变化；2) 无法愈合的疮或溃疡；3) 脚趾冰冷或麻木。 The American Academy of Dermatology (AAD) identifies these signs: 1) unusual color changes; 2) sores or ulcers that don't heal; and 3) cold or numb toes. 早期识别对于预防心脏病至关重要，心脏病是英国四分之一死亡病例的病因。 Early recognition can be crucial in preventing heart disease, which accounts for 1 in 4 deaths in the UK.