What are obese patients able to eat after Roux-en-Y gastric bypass?
OBJECTIVE
The goal of this study was to analyze the likelihood of patients undergoing Roux-en-Y gastric bypass (RYGB) to recover a normal daily food intake, and the possible influence of dietary and exercise habits on long-term weight loss.


METHODS
The sample included 107 morbidly obese postoperative patients with at least 1 year of follow-up. The data collected included anthropometry, dietary and exercise habits, and information on ingested food. The unpaired Student's t test and the multivariate step-by-step regression were used in the analysis.


RESULTS
The mean preoperative BMI was 50.7 ± 11.8 kg/m(2), which had decreased at the moment of survey to 31.7 ± 5.4 kg/m(2). The mean % Excess of BMI Lost (%EBMIL) was 77.4 ± 23.7%. The nutritional components of diet were similar to those for the nonobese population. There were no significant differences in %EBMIL regarding number of meals, social habits, components of diet, or amount of exercise. The daily mean caloric intake (1,364 ± 293 kcal) was the only parameter significantly related to the %EBMIL outcome. More than 30% of the patients had intolerance to certain foods.


CONCLUSIONS
Obese patients undergoing RYGB can establish a postoperative lifestyle and diet similar to the ideal. Only the daily amount of ingested calories demonstrated a statistically significant influence on weight loss over time.
Endocrine and Bariatric Surgery Unit, Hospital Clinico Universitario, Valencia, Spain. joaquin.ortega@uv.es
Joaquin
J
Ortega
Graciela
G
Ortega-Evangelio
Norberto
N
Cassinello
Vicente
V
Sebastia
D000328:Adult; D015992:Body Mass Index; D004032:Diet; D002149:Energy Intake; D015444:Exercise; D005247:Feeding Behavior; D005260:Female; D005500:Follow-Up Studies; D015390:Gastric Bypass; D006801:Humans; D007398:Interpersonal Relations; D008019:Life Style; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009767:Obesity, Morbid / Q000601:surgery*; D011183:Postoperative Complications; D012016:Reference Values; D015431:Weight Loss