title: Diet behavior and low hemoglobin level after laparoscopic mini-gastric bypass surgery.
abstract: OBJECTIVE
  Nutrition problems caused by laparoscopic mini-gastric bypass surgery (LMGB) include lack of iron, calcium and poor nutrition. Iron deficiency anemia is the common. The purpose of this study was to investigate why our patients' hemoglobin level was at a low value after surgery and the relationship between diet frequency, diet behavior, and low hemoglobin level.
  
  
  METHODS
  From January 2009 to April 2010, 120 patients who received laparoscopic mini-gastric bypass surgery were included in this study. Among all patients, there were 34 men and 86 women. Hemoglobin level of male patients less than 13mg/dL and that of female patients less than 11.5mg/dL was defined as anemia. The clinical characteristics and diet behavior were analyzed.
  
  
  RESULTS
  The mean age was 30.9±10.5 years and the mean body mass index was 41.4±7.2kg/m2. Before and after surgery, the proportion of anemia was 4.1% and 26.6%, respectively. The proportion of anemia in females increased more than in males. Hemoglobin level after surgery showed positive correlation (p<0.05) with the diet frequency of high protein, sugar drinks with balanced formula, alcoholic drinks and exercise, but negative correlation (p<0.01) with iron supplements.
  
  
  CONCLUSIONS
  The study concluded that patients after laparoscopic mini-gastric bypass surgery should increase the ingestion of high-protein drinks or food, alcoholic drinks and exercise, to prevent a low hemoglobin level.
authors.affiliation: Department of Nutrition, Min-Sheng General Hospital, Taoyuan, Taiwan.
authors.forename: Meng-Chieh
authors.initials: MC
authors.lastname: Chen
authors.forename: Yi-Chih
authors.initials: YC
authors.lastname: Lee
authors.forename: Wei-Jei
authors.initials: WJ
authors.lastname: Lee
authors.forename: Hsiang-Lan
authors.initials: HL
authors.lastname: Liu
authors.forename: Kong-Han
authors.initials: KH
authors.lastname: Ser
mesh_terms: D000328:Adult; D000428:Alcohol Drinking; D000434:Alcoholic Beverages; D018798:Anemia, Iron-Deficiency / Q000097:blood / Q000175:diagnosis / Q000209:etiology* / Q000517:prevention & control; D015415:Biomarkers / Q000097:blood; D015992:Body Mass Index; D004032:Diet; D004044:Dietary Proteins / Q000008:administration & dosage; D019422:Dietary Sucrose / Q000008:administration & dosage; D015536:Down-Regulation; D015444:Exercise; D005247:Feeding Behavior; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects* / Q000379:methods; D006454:Hemoglobins / Q000378:metabolism*; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects*; D008297:Male; D009752:Nutritional Status; D012737:Sex Factors; D011795:Surveys and Questionnaires; D013624:Taiwan; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D015415:Biomarkers; D004044:Dietary Proteins; D019422:Dietary Sucrose; D006454:Hemoglobins