心血管疾病是指涉及心脏和血管系统的一组疾病，包括冠心病、高血压、心肌梗死、中风等。这些疾病通常涉及心血管系统的结构和功能异常，可能导致血液供应不足、心脏功能障碍等。心血管疾病的风险因素包括高血压、高胆固醇、糖尿病、吸烟、不良饮食和缺乏运动等。预防措施包括保持健康生活方式、定期体检、及时治疗慢性病，有助于降低心血管疾病的发病风险。

Cardiovascular disease refers to a group of diseases involving the heart and vascular system, including coronary heart disease, hypertension, myocardial infarction, stroke, etc. These diseases often involve structural and functional abnormalities of the cardiovascular system, which may lead to insufficient blood supply, heart dysfunction, and more. Risk factors for cardiovascular disease include high blood pressure, high cholesterol, diabetes, smoking, poor diet and lack of exercise. Preventive measures include maintaining a healthy lifestyle, regular physical examinations, and timely treatment of chronic diseases, which can help reduce the risk of cardiovascular disease.