title: Prevalence of Alcohol Abuse Before and After Bariatric Surgery Associated With Nutritional and Lifestyle Factors: A Study Involving a Portuguese Population.
abstract: BACKGROUND
  It has been hypothesized that the metabolism of alcohol is altered following bariatric surgery. However, few studies have evaluated preoperative and postoperative alcohol use. The aims of the study were to characterize alcohol use in the preoperative period and 2 years postoperatively as well as to identify factors associated.
  
  
  METHODS
  A study was conducted using data from the electronic charts of patients submitted to laparoscopic adjustable gastric banding (LAGB) and Roux-en-Y gastric bypass (RYGB) surgery in the city of Porto, Portugal. Associations with the following variables were analyzed: age, marital status, schooling, alcohol use, body mass index, binge eating disorder, and lifestyle habits.
  
  
  RESULTS
  Among the 659 patients, 42.0 % completed the 2 years of follow-up. A total of 90.2 % were women; 67.4 % underwent LAGB, and 32.6 % underwent RYGB. The frequency of alcohol use was 24.2 % in the preoperative period and 9.4 % in the postoperative period (p = 0.000). Daily alcohol intake was two drinks in the preoperative period and 1.8 drinks in the postoperative period. Significant associations were found between postoperative alcohol use and the male gender (p = 0.001), age ≥ 45 years (p = 0.018), and preoperative BMI <40 kg/m(2) (p = 0.028). No significant associations were found with the surgical technique. No previous nondrinkers became drinkers, and no patients increased the quantity or frequency of alcohol intake in the postoperative period.
  
  
  CONCLUSIONS
  The prevalence of alcohol use in the sample was low. Moreover, a lower prevalence rate was found in the postoperative period, independently of surgical technique, clinical factors, and percentage of weight loss.
authors.affiliation: Department of Nutrition, Federal University of Pernambuco (UFPE), Recife, PE, Brazil, gburgos@hotlink.com.br.
authors.forename: Maria Goretti Pessoa de Araujo
authors.initials: MG
authors.lastname: Burgos
authors.forename: Poliana Coelho
authors.initials: PC
authors.lastname: Cabral
authors.forename: Regiane
authors.initials: R
authors.lastname: Maio
authors.forename: Bruno M P M
authors.initials: BM
authors.lastname: Oliveira
authors.forename: Margarida Sarmento Oliveira
authors.initials: MS
authors.lastname: Dias
authors.forename: Diva Bizarro de Figueiredo
authors.initials: DB
authors.lastname: Melim
authors.forename: Maria Flora
authors.initials: MF
authors.lastname: Correia
mesh_terms: D000328:Adult; D000437:Alcoholism / Q000453:epidemiology*; D050110:Bariatric Surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D010535:Laparoscopy; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009752:Nutritional Status; D009767:Obesity, Morbid / Q000601:surgery*; D011174:Portugal / Q000453:epidemiology; D011184:Postoperative Period; D057234:Preoperative Period; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D055815:Young Adult