This study aimed to evaluate the influence of parental lifestyles on the level of physical activity and nutritional status of students aged 11 to 16 in the city of C & aacute;ceresSpain. A crosssectional and observational study was carried out in schools in the cities of C & aacute;ceresExtremadura-Spain, with students aged 11 to 16 years old, of both sexes, from private public schools, and their respective parents/ guardians. Data were obtained from 360 students through questionnaires. The questionnaires covered personal data, eating habits, level of physical activity and sedentary behaviors. The results indicated a high incidence of obesity among adolescents, especially among boys. Lack of adequate physical activity and sedentary behavior were identified as contributing factors. Furthermore, parental obesity, maternal education and parents' self-perception of their health showed relevant associations with their children's obesity. Surprisingly, parental education emerged as a significant factor in the incidence of obesity, while other variables such as gender, parental alcohol and tobacco consumption did not show a statistically significant association. The results highlight the importance of considering socioeconomic factors in understanding adolescent obesity and provide insights for targeted intervention strategies. Based on the results obtained, this study highlights the complex interaction between parents' habits and their children's health, highlighting the need for integrated approaches to promote healthy lifestyles and prevent obesity in the adolescent population.