This is my take on the matter: If it is something that has a serious possibility of causing damage, especially to someone other than myself, I need to have some serious science done to prove it's safety first. If it is costly, then I'd like to know there's some double blind studies that prove it is efficacious. Anecdotal stories are acceptable to me for things that aren't too pricey or unlikely to be dangerous. But I also like to think about how far I've come since changing my diet and how little I would want to undo any of that...