To boost your immune system the first thing you should do is to correct what has it deppressed. Most of the time, there are several factors that push your immune system to a chronic Th2 response (humoral). My advice is to detect what are these causes such as heavy metals, chronic viruses, extracellular bacterias, allergias, parasites, candida, and intolerances. After unloading it, you may start a plan with supplements and immune boosters. Boosting the immune system without correcting the suppresive factors will take you to anywhere. Keep in mind that Sugar in any form is a top immune suppressor as well as cooking with vegetable oil at high temperatures.
Jorge. http://askwaltstollmd.com/articles/sugarimm.php http://www.anapsid.org/cnd/diagnosis/cheneyis.html