以心绞痛、心肌梗塞为代表的心血管疾病。高危人群:老年人、高血压、高血脂、糖尿病、肥胖、缺乏运动及有心血管疾病家族史的人群。预防建议:冬季温差大,血管易收缩和痉挛,干燥也容易造成血液黏稠,诱发冠心病。大家要注意保暖,避免血管过度收缩;补充水 Cardiovascular disease represented by angina pectoris and myocardial infarction. High-risk groups: elderly, high blood pressure, high cholesterol, diabetes, obesity, lack of exercise, and family history of cardiovascular disease. Prevention advice: large temperature difference in winter, the blood vessels are easy to contract and convulsions, dry and easy to cause blood viscosity, induced coronary heart disease. Everybody should pay attention to keep warm and avoid excessive blood vessel contraction;