Abstract : The current study aims to evaluate the effect of covid 19 pandemic and lockdown on dietary habits and body weight change among students of medical college /Al-Qadisiyah University. In this collage-based study, to evaluate the effect of covid19 pandemic and lockdown on body weight and dietary habits among students of medical college, the study was designed to be a cross-sectional one. At the end of the study, we were able to include 295 participants. The study started on the 1st of July and ended at30 October 2022. The study was carried out at a medical college at Al-Qadisiyah university Iraq. The mean body mass index of all enrolled subjects (n = 295) before the lockdown was 23.59 ±4.24 kg/m2 and after lockdown, it became 24.01 ±4.36 kg/m2. The slight increase in mean BMI was not significant (p = 0.083). However, when the quality of change in BMI was taken into consideration, it was found that an increase in BMI was reported at 57.3 % and a reduction in BMI was seen at 29.5 %. In addition, no change in BMI was reported in 13.2 %. Before the lockdown, there was a significant difference in mean BMI among persons with reduction, no change, and increase in BMI (p < 0.001). Similarly, this was also the same finding after the lockdown. There was significant association between the quality of change in BMI and the intake of Cereals (p = 0.001), Sweets (p = 0.001), [Coffee, Tea] (p = 0.001) and snake (p = 0.003). Also, a significant association was found between taking the supplement and a special type of food to increase immunity during covid 19 pandemic (p = 0.012). The frequency of healthy food consumption during lockdown compared to the usual intake was not significantly associated with the quality of change in BMI after lockdown (p = 0.063). The association between the response to the question “Any history of family obesity?” and quality of change in BMI was significant (p = 0.015), The association between exercises, sedentary behaviors, and quality of change in BMI was not significant {(p = 0.343), (p = 0.088)} respectively. Factors that impacted students' life during covid 19 pandemic were not significantly associated with the quality of change in BMI (p = 0.249).