Nutritional and Psychosocial Intervention to Improve the Self-Concept of Body Image and Increase the Self-Esteem of Overweight and Obese Individuals: A Quasi-Experimental Study

Negative habits persist in contemporary society that can sometimes result in overweight or the deterioration of body image. This study aimed to assess the suitability of a nutritional and psychosocial intervention as part of an interdisciplinary approach to improve the perception of body image and increase the self-esteem of individuals who are overweight or obese. A total of 55 participants (25 men and 30 women) were included in this quasi-experimental intervention study. Measurements were taken as part of an ambulatory treatment to obtain values for weight, self-esteem, and body image perception using the Rosenberg scale and the Body Self-Esteem scale. At the end of the intervention and after one year, the weight reductions reached an average of 13.4 kg, positive self-image perception improved from a mean of 88.73 at pretest to 148.02 at follow-up, and self-esteem improved from a mean of 22.6 to 32.6. These were all statistically significant changes (p < 0.001). The model is effective in terms of weight reduction, together with improved levels of self-esteem and favorable perceptions of body image.