Research has shown that morbid obesity adults have more adverse childhood experiences. The aim of our work was to study the prevalence of this experience in a sample with 75 participants with morbid obesity (weight range of 118.57 Kg) candidate to bariatric surgery. Sixty-six (88%) participants had at least one adverse childhood experience, 51 (68%) refer at least four adverse experiences. The results suggest that a large number of participants had adverse childhood experiences, and food behaviour should be understood attending to the whole life of the individual.