title: Weight loss and nutritional anemia in patients submitted to Roux-en-Y gastric bypass on use of vitamin and mineral supplementation.
abstract: BACKGROUND
  Obesity is a chronic disease with high growth in population and bariatric surgery is currently considered the most effective treatment for weight reduction; on the other hand, nutritional deficiencies are observed after this procedure.
  
  
  OBJECTIVE
  To analyze weight loss progression and nutritional anemia in patients submitted to Roux-en-Y gastric bypass on use of vitamin and mineral supplementation.
  
  
  METHODS
  Retrospective analysis of 137 patients of both sexes, aged between 18-60 years, using supplemental multivitamins and minerals, were included; personal information, anthropometric and laboratory data in the preoperative, 12, 24, 36 and 48 months postoperatively were collected.
  
  
  RESULTS
  Postoperatively, in both sexes, occurred weight loss compared to the pre-operative weight gain at 48 months and maintenance of body mass index. There was a decrease in the percentage of excess weight loss at 48 months postoperatively compared to the time of 12, 24 and 36 months in men and decreased at 48 postoperative months compared to the time of 24 months in females. There was a decreased in serum ferritin in both sexes and increased serum iron at 48 months postoperatively in males. There was a decreased in vitamin B12 and folic acid increased serum at 48 postoperative months in females.
  
  
  CONCLUSIONS
  Surgical treatment was effective for reducing weight, body mass index reduction and achievement of success in the late postoperative period along with multivitamin and mineral supplementation on prevention of serious nutritional deficiencies and anemia.
authors: Nutrition Institute Josué de Castro, Health Sciences Center, Federal University of Rio de Janeiro.
authors: Natalia Maria Coutinho Pinheiro de Jesus
authors: NM
authors: Ramos
authors: Nutrition Institute Josué de Castro, Health Sciences Center, Federal University of Rio de Janeiro.
authors: Fernanda Cristina Carvalho Mattos
authors: FC
authors: Magno
authors: Nutrition Institute Josué de Castro, Health Sciences Center, Federal University of Rio de Janeiro.
authors: Larissa
authors: L
authors: Cohen
authors: Nutrition Institute Josué de Castro, Health Sciences Center, Federal University of Rio de Janeiro.
authors: Eliane Lopes
authors: EL
authors: Rosado
authors: Hospital Clementino Fraga Filho, Federal University of Rio de Janeiro, RJ, Brazil.
authors: João Régis Ivar
authors: JR
authors: Carneiro
mesh_terms: D000328:Adult; D000740:Anemia / Q000188:drug therapy* / Q000209:etiology; D019587:Dietary Supplements; D005260:Female; D015390:Gastric Bypass; D006801:Humans; D008297:Male; D044342:Malnutrition / Q000150:complications / Q000188:drug therapy*; D008875:Middle Aged; D008903:Minerals / Q000627:therapeutic use*; D011184:Postoperative Period; D012189:Retrospective Studies; D014815:Vitamins / Q000627:therapeutic use*; D015431:Weight Loss; D055815:Young Adult
chemical_list: D008903:Minerals; D014815:Vitamins