People in America are afraid of the wrong things. Just like Tracey said, people are not afraid to take in massive amounts of cheeseburgers, soda and fake foods loaded with chemicals - not to mention dump carcinogenic pesticides on their lawns, etc.
Similarly they are not afraid of going under anesthesia and a knife - but they're afraid of drinking olive oil and grapefruit juice. Kind of funny when you think about it.
Hate to tell you Susie, but not many people care about "professional" opinions on this forum. Many have gone that route and not gotten results or worse yet gotten burned. People here care about getting healthy and have really good results with few complications from doing these flushes. If it concerns you so much - don't do them!
As for the rest of us on this forum (or most of us anyway) - we are happy to keep flushing!