Definition from Wiktionary, the free dictionary
nocebo (plural nocebos)
- (pharmacology) A substance which a patient experiences as harmful due to previous negative perception, but which is in fact pharmacologically (medicinally) inactive.
1961, Walter P. Kennedy, “The nocebo reaction”, in Medical World, volume 95, September, page 203:
- It is somewhat surprising that little attention has been drawn to the existence of the contrary effect [to the placebo] — which I may call the nocebo reaction.
- 2009, Stuart Blackman, "Why health warnings can be bad," Financial Times, 25 Apr. (retrieved 12 May 2009):
- In the case of the nocebo, it is negative expectations that become self-fulfilling prophecies.
- 2014, Jennifer Welsh, "Researchers Who Provided Key Evidence For Gluten Sensitivity Have Now Thoroughly Shown That It Doesn't Exist," Business Insider, 15 May 2014):
- It seems to be a "nocebo" effect — the self-diagnosed gluten sensitive patients expected to feel worse on the study diets, so they did.