Objective: Determine concordance and correlate nutritional status and quality of life of mothers and children, as well as to identify of the Body Mass Index influence on perception of quality of life from mothers and children. Material and Methods: Descriptive correlational design in a sample of 183 mother-child dyads. Two instruments were used: 1) Sizing me up and 2) Sizing them up. Results: The results revealed that the nutritional status in children was 19.1% overweight and 32.8% obese, and 41% of mothers were obese. Linear regression generally shows that mothers contribute to the assessment made by children of the overall quality of life, thus explaining 69.4% of the variance. Conclusion: Mothers underestimate the quality of life of their children and are not able to objectively interpret the situations that affect the quality of life perceived by their children.
