Introduction: The increasing prevalence of overweight and obesity among adult populations is a major public health. Changes in dietary behavior remain among the most significant risk factor. our objective was to investigate the association between dietary habits, lifestyle, and medical factors with obesity in adults. Method: our study was conducted with 731 adult populations, selected through a stratified random sampling method. Data collection was performed using a questionnaire that included sociodemographic information, lifestyle-related factors, medical history and Dietary intake. Results: the obesity increases with age in both sexes, with a higher prevalence in females (p<0.0001). The prevalence of obesity among individuals with diabetes and hypertension is very high in both sexes. We showed that the risk of obesity is very high among adults who consume fruits less than three times a week (p=0.03; OR=2.004) and red meats more than four times a week (p=0.006; OR=1.57), sweeties (p=0.018; OR=1.50), and fast food (p<0.0001; OR=3.34).