Background: The infant-juvenile period is one of high vulnerability during the lifestyles chosen become determining factors for future health status. This study aimed to evaluate lifestyle, specifically eating habits and physical activity, in 5-15-year-olds in Spain and their health status (anthropometry). Methods: This cross-sectional population study with two time points (2006 and 2013) was conducted by compiling data from the Spanish National Health Survey. We used the minor survey, specifically the data from the Health De-terminants module, which included 5-15-year-olds. Compiled information was obtained from parents or guardians. Results: The overall overweight and obesity prevalence in Spain (2013) in 5- to 15-year-olds is 24.3%. A drop of 8.2% in meat consumption was found, while overall intake was high. Daily intake of plant-based food (fruit, vegetables, pulses) was low, especially vegetables (32.9%). Increased sedentary lifestyle was observed, probably because the use of communication technologies has increased in recent years (P<0.001). Moreover, watching TV rose to 19.3% for 1 hour/day watching TV on weekdays and to 23.5% at weekends. Conclusion: When comparing the two time points (2006 and 2013), we observed that lifestyle, eating habits and phys-ical activity strongly associated with the Spanish infant-juvenile population¿s anthropometry. Mediterranean diet pat-terns seem to be abandoned and physical activity is practiced less, which will have a negative impact on future quality of life.