This is a very good forum, but it is meant to be for people who want to lose weight faster. That is why I prefer to come to this forum and read about weight issues here.
Go to the Fasting" Water Fast Only support forum and make your question there. Those folks fast mainly for health reasons and are more educated or better prepared to discuss health issues and fasting.
I know, as a fact, that Fasting is good to kill parasites. But, for your own piece of mind, and to be more informed, you should repeat your question in the other forum.