They produce toxic metabolic wastes that can attack the central nervous system. This can result in restlessness, anxiety, and depression. Penetrating the skin, other parasites can cause rash, eczema, swelling, papular lesions, skin ulcers, or itching dermatitis. Normally, only the adult stage of these flukes occurs in humans. Parasites in any form lead to an enormous weakening of the immune system.
Many doctors are hesitant to suggest the existence of parasites, because they are so hard to detect.
Random stool samples, the most widely used diagnostic technique, are unreliable. On the basis of false negatives, parasites get ruled out as the cause of disease. Furthermore, the symptoms of parasitic infection can take a considerable amount of time to become manifest, sometimes days or even months ensuing. If, in spite of the obstacles to diagnosis, a parasitic infection is implicated, standard allopathic treatment with chemical agents may cause strong side-effects at a time when the immune response is already at its lowest. It has proven highly effective against a broad number of parasitic invaders.