How does flushing help health?

I've been thinking about the flushing, and I can understand completely how flushing out bile and stones from the bile ducts could help bile flow and help digestion.

However, I'm a little unclear how flushing stones can improve other things such as body pain, allergies, etc..
What do allergies, fatigue, and moodiness have to do with bile ducts?

It seems to me that if something were wrong internally in the liver that was causing an allergy for example, that removing a stone in the duct would have no effect on this internally, yet I've read many testimonials to the contrary.

Can someone explain how this works? Tweet