Parasites cause a wide variety of symptoms in the body, and often go undetected because medical testing methods only reveal 50 or so of the 100 different parasite species that infest man. As a result, if you have a test done for parasites and the test is negative, it doesn’t necessarily mean you don’t have parasites. Our clinical experience leads us to believe that approximately 80% of all parasitic infestations are due to microscopic parasites, not the larger parasites with which everyone is somewhat more familiar.