the next step from reading Robert grays book on Colon Health

Hello all.
I have just been reading Robert Grays book "Colon Health Handbook: New Health Through Colon Rejuvenation"
It is a small book but packed with information. I'm now wondering about the next step in my self education. I want to know more about this anti mucoid herbs and witch combination does what, because they are synergistic. I also wonder if there is a cookbook out there that follows up on the path of making dishes that doesn't produce mucoid supstance.

Is there more information out there or is Robert Grays little book all that is written on this subject in an advanced way?

All help is highly appreciated.

/Senna Tweet