I personally know someone who has been doing coffee enemas since the 1970s ( 86 years old now ) who is very healthy for their age.
3 people out of a couple hundred thousand? What are the death rates for Acetominophen ( number 1 cause of death from liver failure ), Ibuprophen ( number one cause of death from Kidney failure ), Celebrex anyone? How many die of fatty liver damage from High Fructose Corn Syrup? How many dies of brain tumors from Aspartame? Do they even bother to track this?