央视网消息：10月13日是世界血栓日。什么是血栓？它又是如何形成的？有哪些危害？一起来看！ 专家介绍，血栓是指血液在血管中流动状态下，凝聚所形成的特殊结构的血块。 血栓性疾病涉及多个器官系统，是一种全身性疾病，按照生成部位的 不同，主要分为： 一、静脉血栓性疾病。静脉血栓栓塞症包括下肢深静脉血栓形成和肺栓塞。二、动脉血栓性疾病。主要有急性冠脉综合征、心房颤动、 动脉缺血和卒中。三、毛细血管血栓。也被称为毛细血管动脉瘤，好发于颜面部。 北京大学人民医院血管外科主任医师 李伟：血栓形成三要素，主要就是当血管壁有损伤，比如说外伤、炎症等等问题，或者是血流缓慢，久站久坐， 卧床休息术后的这些病人，都会有血流缓慢的问题。还有一个因素就是血液高凝状态，由于药物原因或者是服用一些激素，癌症、肿瘤、吸烟、肥胖等等因 素，它都会让你的血液变得高凝。这几个因素叠加起来之后，就会更容易出现血栓的问题。 专家指出，血栓性疾病常危及生命，一旦怀疑形成血栓，应立即就医。 北京大学人民医院血管外科主任医师 张韬：血栓一旦形成之后，如果没有进行很好的治疗，那么它会逐渐增加、逐渐蔓延，甚至于从一个小腿血栓变 成大腿血栓、肺栓塞，严重者出现致残 ...

Group 1 - Excessive salt and sugar intake can lead to high blood pressure and arterial damage, increasing the risk of heart failure and cardiovascular diseases [1][2] - High-fat, high-cholesterol, and trans fat foods also pose significant risks to vascular health and should be minimized [2] - Sedentary lifestyles, characterized by prolonged sitting, can lead to heart strain, increased blood viscosity, and a higher risk of heart disease, with an increased risk of 47% for those sitting over 8 hours a day [3] Group 2 - Lack of physical activity can cause blood flow stagnation, leading to potential blood clots and increased risk of pulmonary embolism [3] - Chronic stress and sleep deprivation can result in elevated heart rates and blood pressure, contributing to cardiovascular issues, with studies indicating that three consecutive nights of poor sleep can age blood vessels by 10 years [4][5] - The accumulation of cholesterol and triglycerides due to stress and lack of sleep can lead to arterial hardening, increasing the risk of heart disease [4][5]