Food and Gastrointestinal Habits After Bariatric Surgery
Condition: Bariatric Surgeries
Study type: Observational

Summary: 
      The worldwide epidemic of overweight and obesity affects about 1.7 billion people around the
      world. Since 1991, many international medical societies have established as recommendation
      for bariatric surgery the unsuccessful clinical treatment in patients with IMC > 40Kg/m2 or
      IMC > 35Kg/m2 in the cases with serious co-morbidities related to the possible reversion of
      them with the lose of weight due to the surgery. In front of the new anatomical condition
      from the gastrointestinal tract the patients present changes in food preferences and in the
      food intake, which include modifications in food choices, perception of hungry and satiety
      and in the tolerance to determinate food. These changes in food intake of the patients are
      observed mostly in the first year after the surgery an adaptive phase to a new condition.
    

Detailed description: 
      After the new anatomical condition of the gastrointestinal tract, provided by bariatric
      surgery leads patients to experience changes in food intake and behavior. The aim of this
      study was to assess alimentary habits, food intolerances and gastrointestinal symptoms in
      patients who underwent bariatric and metabolic procedures: Roux-en-Y gastric bypass,
      biliopancreatic diversion and duodenal exclusion. We studied 34 patients of both sexes, from
      outpatient clinics in Surgery of Obesity and the Metabolic Surgery at University of Campinas.
      They were submitted to bypass gastric in Roux-en-Y (n=15), biliopancreatic diversion (n=9)
      and duodenal exclusion (n=10). Validated questionnaire for assessment of food tolerance was
      applied in patients with more than six months of follow-up after surgery addressing diet and
      gastrointestinal symptoms. The descriptive and comparative analyses were performed by
      analysis of variance and bivariate correlation. In patients who underwent to bypass gastric
      food intolerance was greats regarding to ingestion of rice (33%) and red meat (33%) in
      comparison to others groups. The flatulence and diarrhea were more prevalent in patients who
      underwent biliopancreatic diversion. The vomiting was more prevalent in patients who
      underwent gastric bypass. Each procedure presents peculiarities to the anatomical and
      functional changes that affect the food absorption. This may have negative effects on the
      nutritional status of patients and affect the quality of life. The nutritional therapy for
      each individual procedure may assist in the management of clinical concerns of operated
      patients
    

Sampling method: Non-Probability Sample
Study population: 
        It was studied 34 patients (15 males, 19 female), ranging from 24 to 62 years old, who
        underwent bariatric surgery: gastric bypass (n=15), biliopancreatic diversion (n=9) or
        metabolic surgery: duodenal exclusion (n=10) with more than six months of follow-up
        postoperatively.
      
Keywords: Tolerance alimentary; Morbid obesity; Type 2 Diabetes Mellitus