Well, I did many juice fasts and the longest I did was 100 days in 2001. I LOVED IT! I did not drink as many juice as you though. I drank broth first thing in the morning and at night, 2 herbal teas and one fruit juice in the afternoon and one veggie juice in the evening. I did 2 enemas a day first thing in the morning and one around 7pm. it was the best experience of my life. I am currently on an another fast so, far it is 13 days and I plan on going for ...??? I don't know as long as I need to to feel go about myslef, I guess! I am mostly doing The Master Cleanse now and after the 40 days I plan on switching back to juices. I love the way I feel when I fast ,a s for your digestive system I think you may be drinking the pulp of the juice and that may be why you are still hungry. Try filtering your juice before drinking to remove all the pulp.