Nocebo [1], a well know/documented phenomenon, can be very damaging.
[1] https://en.wikipedia.org/wiki/Nocebo
On the other hand, the placebo effect works even when the placebo is clearly labelled "placebo". So I guess there's potential to tell people needlessly disconcerting facts and then take the edge off with reassuring bluster and functionless comforts.
On the other hand, the placebo effect works even when the placebo is clearly labelled "placebo". So I guess there's potential to tell people needlessly disconcerting facts and then take the edge off with reassuring bluster and functionless comforts.