I do understand you so well. I have never fasted more than 4 days because of depression. Hunger has never been a problem for me. I use food as a drug and am addicted to it.
We can keep within repressed hurt and unresolved issues, often times, whithout being aware of it. So, chances are you are releasing toxins from that part of the brain responsible for emotions.
What Chiron told you about the liver is true. The brain is not the only one responsible for our negative feelings.
I can tell that technique Chiron tells you works. I started to practice it a few weeks ago, following her advise, and it works! I plan to take it with me when I finally decide to try a fast again.
They say that when emotional healing takes place during an extended fast, we emerge confident, more poised and calm after it. It is said the new happier stage can be permanent. A consolation.