According to Gerson who has the world's best success at curing cancer, coffee enemas are to be used as part of a nutrient rich regimen.
Besides taking supplements, it is recommended that you have two juicing
sessions to each enema. At the Gerson clinics there are five enemas a day.
Because of the 20 pounds of fruits and vegetables consumed daily, there is
no risk of stripping the body. here's a couple of links.
Watch the video at the first link.