I've been doing daily high retention coffee enemas (with coffee grown just for that and an enema bucket from http://www.sawilsons.com) as one of the many alternative cancer treatments I'm trying - it's supposed to be the best liver detoxifier there is. At first lots of nasty stuff came out - only after 6 months of doing them every day did only coffee come back out. (I had my gallbladder out a year ago, in between 2 thyroid cancer surgeries, so I want to make sure my liver gets in shape.) I love the daily coffee enemas - I spend the 20 min. in meditation, praying and visualizing the cancer unable to live or multiply, and it's my private time every day.