Recent years have seen a rise in the incidence of poor eating habits, particularly among adolescents. Modernization and industrialization are making it harder for even rural residents to follow a healthy dietary regimen. The stages of adolescence and infancy and childhood are equally important for different aspects of cognitive and psycho-social development. This current study evaluated the level of nutritional status and cognitive impairment among adolescence from both rural and suburban populations who had bad eating patterns. A total of 100 pupils were found to have poor eating habits during the study, which involved teenagers from both rural and suburban areas. The frequency of foods was used to gauge the unhealthy eating habit. Using food frequency, the unhealthy eating habit was evaluated. The MMSE tool and an aptitude score were used to assess cognitive function. Both the rural and suburban populations' MMSE scores were comparable and typical. The adolescent living in rural areas performed pretty well on the aptitude exam, with moderate scores, as opposed to poor results from the suburban population. The study comes to the conclusion that while the adolescent ' MMSE scores did not show any particularly concerning aberrations, the unhealthy eating habits they had may have contributed to their continued cognitive impairment as they grew older..