As your body becomes healthier, your ph level stays alkaline, the parasites no longer wish to stay in your body and leave. This is what I have read.
If your body is full of many parasites this will take a while. parasites love toxic bodies, so we must work at making our bodies alkaline, eating the proper diet, getting the metal out of our teeth and bodies. Otherwise they will hide in our bodies causing bad diseases.
Parasites only live for a certain amount of time but in that time span they lay so many eggs to make up for the ones that are dying off(5,000 to 200,000 eggs each day). And parasite maintance, we are reinfected daily and must continue to cleanse for parasites the rest of our lives...heyjude