The effect of a medical opinion on self-perceptions of weight for Mexican adults: perception of change and cognitive biases

摘要

BackgroundThis study analysed the relationship between perceived and actual Body Mass Index (BMI) and the effect of a prior identification of obesity by a medical professional for adults using difference in response for two distinct BMI self-perception questions. Typically, self-perception studies only investigate the relation with current weight, whereas here the focus is on the self-perception of weight differences.