中醫大腸經上的主要穴位，如合穀，曲池等，有一主要作用，就是增強人體的免疫係統而消炎。不管是感冒發燒或其它感染傳染，刺激這些穴位都有立竿見影之效。
在中醫應用大腸經的兩千年之後，西醫剛剛發現大腸的免疫功能，比中醫落後太多:
西醫剛剛發現:
When most people think of their immune system the last thing that comes to mind is the large intestines. However, thanks to emerging research and high profile ad campaigns by companies like Dannon® yogurt, people are getting introduced to the connection.
Our large intestines are inhabited by trillions of bacteria often referred to as probiotics (pro=encouraging, biotic=life). These bacteria composed primarily of acidophilus and bifidobacterium species are introduced to our system during the birth process and play a crucial role in our health. Without probiotics, humans would be extremely vulnerable to food borne illnesses, be deficient in key nutrients and vitamins, and have a much weaker immune system in general.
Lifestyle factors play a significant role in determining how friendly our large intestines are to hosting these important bacteria. Eating a diet high in sugar, fat and processed foods prevents them from growing and thriving. Consumption of fiber from fruits, vegetables and whole grains along with lean proteins like fish, chicken and turkey helps to create an environment that promotes the growth of probiotics. In addition, the frequent use of antibiotics in our society can greatly disturb the probiotic flora in the gut. Although these antibiotics are intended to kill only the bad bacteria, they also affect the good ones. This is why many people experience diarrhea and yeast infections when they take antibiotics. As the good probiotic bacteria are killed, bad (pathogenic) organisms like yeast are able to get a foot hold in the system. Frequent or long term antibiotic use can dramatically alter the gut flora and can be a significant contributing factor to other long term health problems related to immune dysfunction and intestinal conditions
