冬季来临,空气变得干燥、寒冷,这会让我们呼吸道黏膜抵御感染的能力下降。因此,在冬天我们很容易发生上呼吸道感染,即感冒、病毒性咽炎、喉炎等。对于一般人来说,在秋冬季节有一两次小感冒没什么,可是对于肺本来就很脆弱的人,一次小感冒就有可能引起支气管炎、肺炎等大问题,甚至需要住院治疗。通常哪些人有一副脆弱的肺呢?首当其冲的是吸烟者。吸烟不仅是导致肺癌的首要因素,还会导致很多其他慢性肺病,例如慢性支气管炎和肺气肿。这些慢性肺病会 As winter approaches, the air becomes dry and cold, which reduces the ability of our respiratory mucosa to resist infection. Therefore, in the winter we are prone to upper respiratory tract infections, namely, cold, viral pharyngitis, laryngitis and so on. For the average person, there is nothing in the fall and winter seasons once or twice a small cold, but for people who are already very vulnerable to the lungs, a small cold can cause major problems such as bronchitis and pneumonia and may even require hospitalization. Which people usually have a weak lung? The first is the smoker. Smoking is not only the leading cause of lung cancer, it also causes many other chronic lung diseases such as chronic bronchitis and emphysema. These chronic lung diseases will be