Lets start by clarifying one thing - the body does not have an immune system, the body is an immune system, many parts working together for continued health.  There are a lot of variables to consider – the lymphatic system, which is rich with white blood cells, the skin and mucous membranes, the hypothalamus, which regulates body temperature.  So, like with most things, Chinese medicine uses a “whole systems” approach to treatment.  You can use this approach yourself, by first thinking about what you can do for the health of your whole system: