「疾病金三角」——了解疾病的产生
「疾病金三角」是由宿主（host）、病原（pathogen）和环境（environment）组成，当三者失去平衡，则会发生疫疾。环境温度的变化会影响病原，助长病毒生长；环境也会影响宿主，像是冬天人的免疫力较低落，容易得流感。这也是为什么每年冬天，欧美国家都会进入流感季节。所以「疾病金三角」中，「环境」最为重要。
从体外的环境来说，病毒喜欢低温，如果维持较高温或干燥的外在环境，病毒便丧失活性。
这次疫疾是「湿」比较重。当体内的环境处于潮湿的状态，宿主相对容易得病。因此，避免吃湿热的食物相当重要。
如何判断免疫是否失调？
如果一个人经常感冒，就是免疫失调。
中医认为感冒分为两种，一种是所谓的上呼吸道感染，具有喉咙痛、发烧、全身酸痛等症状，是「免疫过于低落」的征兆。另一种是过敏，比如打喷嚏、流鼻水、鼻子痒，是「免疫不稳定」的状态。这两种都要非常小心。
「The Disease Triangle」——Understanding the cause of disease
「The Disease Triangle」is made up of host, pathogen and environment. When one of the three factors is missing, the triangle is not complete, and no disease will occur.
From the external environment of the body, viruses like low temperature. Maintaining a relatively high temperature with low humidity, the virus would lose its activeness.
The Covid-19 pandemic is considered high in humidity. When the internal environment of the body is very humid, the host would caught on the disease easier. Hence, avoid eating food that are damp and hot in nature.
How to determine if someone’s immune system is dysregulated?
If one caught on cold very often, that’s immunity dysregulation.
Traditional Chinese Medicine perceives cold as two types. One is upper respiratory tract infection, with symptoms such as sore throat, fever, body aches, etc, which are signs of “low immunity”. Another type is allergies, such as sneezing, runny nose, and itchy nose. These are signs of “unstable immunity”. Be very careful with both of these.
From the external environment of the body, viruses like low temperature. Maintaining a relatively high temperature with low humidity, the virus would lose its activeness.
