Nutrient deficiencies were reported in infants born to women who underwent procedures that resulted in malabsorption, as well as women who did not take prenatal vitamins or had difficulty with their own nutrition (., from chronic vomiting). Literature suggests that gastric bypass and laparoscopic adjustable band procedures confer only minimal, if any, increased risk of nutritional or congenital problems if supplemental vitamins are taken and maternal nutrition is otherwise adequate. Biliopancreatic diversion has an appreciable risk for nutritional problems in some patients. Women who have undergone bariatric surgery may have less risk than obese women for certain pregnancy complications such.
