Aim: The analyze the potential influence between obesity in pregnancy and the abdominal delivery- cesarean section and to establish the possibility of its prevention. Materials and Methods: A prospective study examined 200 patients, delivered by cesarean section in a oneyear period. The study included a structured questionnaire; the body weight at the end of pregnancy was measured and it was analyzed against all available medicine documentation. Statistical analysis included: χ² test, Student's t-test, and Fisher’s test, as well the Pearson′s and Spearman′s test of correlation rank. Results: From all 200 (100%) patients delivered by cesarean section, 67 (33.5%) were overweight and obese. Body mass index at the beginning of pregnancy was significantly associated with cesarean section (χ² = 69.141; p < 0.001), along with the appearance of eventual pregnancy complications, and also with the neonatal birth weight (p = 0.224; p < 0.001). Conclusion: The nutritive status, both at the beginning and at the end of pregnancy is the important factor for the pregnancy outcome.