2.1. Experimental Design
A sham-controlled, randomised, parallel, single-blind study on the effect of aversive conditioning on the responses to a comfort meal in healthy women was performed in a tertiary referral centre between February and August 2021. The research was conducted according to the Declaration of Helsinki. The protocol for the study had been previously approved by the Institutional Review Board of the University Hospital Vall d’Hebron (Comitè d’Ètica d’Investigació Clinica, Vall d’Hebron Institut de Recerca; protocol number PR(AG)338/2016M approved 28 October 2016, revised 11 December 2020) and all participants provided written informed consent. The study protocol was registered with 