Recently, as cold air masses frequently move southward, temperatures have dropped sharply in many regions, leading to a peak period for cardiovascular and cerebrovascular diseases. Doctors warn that cold weather can trigger vasoconstriction and elevated blood pressure, increasing the risk of conditions such as myocardial infarction and stroke—especially among the elderly and those with pre-existing health conditions.During sudden temperature drops, the body constricts peripheral blood vessels to maintain core temperature, which raises blood pressure and increases cardiac workload. Cold exposure may also increase blood viscosity and slow circulation, further elevating the risk of thrombosis. Additionally, reduced physical activity and richer, oilier diets common in winter can contribute to cardiovascular events.Experts recommend: (1) staying warm, particularly around the head, neck, and feet; (2) taking prescribed medications regularly—patients with chronic conditions like hypertension or diabetes should never stop or adjust doses without medical advice; (3) engaging in moderate exercise while avoiding early-morning outdoor workouts; (4) eating a light, balanced diet rich in fruits and vegetables while limiting salt and fat intake; and (5) seeking immediate medical attention if symptoms such as chest tightness, dizziness, or slurred speech occur.Physicians stress that prevention is better than cure, urging the public—especially high-risk individuals—to stay vigilant and respond scientifically to temperature fluctuations to protect heart and brain health.
近日，随着冷空气频繁南下，多地气温骤降，心脑血管疾病进入高发期。医生提醒，寒冷天气会刺激血管收缩、血压升高，增加心肌梗死、脑卒中等疾病的风险，尤其对老年人和已有基础疾病的患者影响更大。气温骤降时，人体为维持核心体温，外周血管会收缩，导致血压上升、心脏负荷加重。同时，寒冷还可能诱发血液黏稠度升高，血流速度减慢，进一步增加血栓形成的风险。此外，冬季人们活动减少、饮食偏油腻，也容易诱发心脑血管事件。专家建议：一是注意保暖，尤其是头部、颈部和脚部；二是规律服药，高血压、糖尿病等慢性病患者切勿擅自停药或调整剂量；三是保持适度运动，避免清晨过早外出锻炼；四是饮食清淡，多摄入蔬果，控制盐油摄入；五是一旦出现胸闷、头晕、言语不清等症状，应立即就医。医生强调，预防胜于治疗，公众特别是高危人群应提高警惕，科学应对气温变化，守护心脑健康。
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