Bariatric surgery is the best known procedure for treating severe obesity and the majority of patients who received surgical weight loss procedure were at childbearing age. Female patients who successfully lost weight following bariatric procedure, become pregnant and those are need to be evaluated carefully due to various operative procedures and to ensure intake of quality nutrition. A 35-year-old female, gravida 4, para 2, treated for morbid obesity with vertical sleeve gastrectomy performed 14 months earlier, presented 7 weeks of gestation. Before surgery, she had weighed 92.4 kg (body mass index (BMI); 32.9 kg/m(2)); she had gradually reduced her weight to 65.5 kg (BMI; 23.5 kg/m(2)) postoperatively at 14 months. For the first trimester of pregnancy, her average intake was 698.6 kcal/day from food, and 840~1352.8 kcal/day in second and third trimester. During pregnancy, significant iron, cobalamin and vitamin B12 deficiencies were not founded. She has gained a total of 8 kg. She delivered a healthy female infant at full term. Nutritional supplementation following bariatric surgery and close supervision during pregnancy can prevent nutrition-related complications and improve maternal and fetal health.