Example of Doc *Not* Disabusing Patient of Placebo Belief

I'm always interested in placebo effect and in particular, the ethics of leveraging it. Here is an interesting case of a doc explicitly speaking to his approach of not warning a patient off a benign placebo:

On the other hand, Felson says he doesn't disabuse patients of the notion that the supplements are helping if patients truly believe they are, even though a month's supply can cost $30 to $50. "Far be it from me to take away either the placebo effect or an idiosyncratic reaction that might be of benefit," he says.