Yes, they are parasites, as we've discussed recently. HOwever, as I progress with my chelation I still eliminate more stones. The spaces freed by the stones make perfect new nests for worms and they now add to my problems with my liver.
By the way, chelation helped me kill more of these Ascaris lately so I'm hopeful that continuing chelation will eventually rid me of these pests.
Don't discount the big liver flush, it's amazing in quickly removing the worm debris and big stones. Everybody has stones and as tissues change from chelation, they start coming-out more easily.