I"ve read that candida (yeast) can be the body's way of protecting itself from heavy metals.That the candida surrounds the mercury cadmium etc. to protect itself from even more damage caused by the heavy metals. I could not get rid of my candida till I chelated the heavy metals. I used lots of garlic, cilantro, chlorella and I took Modliflan for my high cadmium. Then after taking Modiflan my urine test for cadmium came out clear. Research heavy metal-candida or mercury fillings to gain more knowledge. The humaworm is great for parasites IMO. I believe it does cleanse also. But you may need other things to chelate the heavy metals on a longer term basis.