Imbalance diet has health implications, thus understanding the correlates of dietary habits are essential. This study seeks to investigate the eating behaviors of university students in relation to body mass index differences with the view to determine the relationship between these habits and BMI status. Anthropometric measurements, eating behaviors and personality traits were determined in a sample of university students from Southern Nigeria. The participants, 108 students (48.15% male and 51.85% female), aged 24.1±4.1 filled out a self-reported questionnaire. The present study revealed that the mean factor structure scores in the underweight, normal weight and overweight students appear to be similar but no significant difference was found with respect to weight status. In the overweight category, anxiety showed significant positive associated with sleeping hour per night (r = 0.36) and also a negative correlation with sleeping condition (r =-0.36). Furthermore, emotional eating and personal interest in food was negatively correlated with snacking for all weight categories but the association was strongest for underweight students (r =-0.81), followed by the overweight students (r =-0.35). Another interesting finding was the strong negative relationship between anxiety and eating of breakfast observed only in the underweight students (r =-0.65). The results indicate that the same practices can have different effects depending on the BMI of the subject, suggesting that is important to disentangle the subscales of dietary practices. Personality traits showed no significant relationship with BMI, additional research is needed to clearly understand the modulating factors.