Non-PRO English to French Other Linguistics

The term placebo (meaning "I shall please") was used in
mediaeval prayer in the context of the phrase Placebo Domino ("I shall please the Lord") and originated from a biblical translation of the fifth century AD.7 During the 18th century, the term was adopted by medicine and was used to imply preparations of no therapeutic value that were administered to patients as "decoy
drugs".

The term began to transform in 1920, and
through various intermediate stages was fully
transformed in 1955 when it finally claimed an important portion of the therapeutic effect in general. Henry K. Beecher, in his 1955 paper "The Powerful Placebo", attributed a rough percentage of 30 per cent of the overall therapeutic benefit to the placebo
effect.