I think many people would listen too, if a doctor was telling them to detox. especially those very ill and desparate to have their health back. they'd do anything if they thought it would help.
they have to believe it can work...and still most people do not believe they can heal themselves this way. so they don't even try. if doctors would tell them it does work, I think that'd make a big difference. but this doesn't happen often....it's still so outside their paradigm, they won't recommend something they have no belief in themselves.