title: Fiber intake of normal weight, moderately obese and severely obese subjects.
abstract: The lack of dietary fiber may be a contributing factor in obesity. This study examined the fiber intake of three weight groups: normal (20.0 < or = BMI < or = 27.0), moderately obese (27.1 < or = BMI < or = 39.9) and severely obese (BMI > or = 40.0). Each group contained 50 subjects. Detailed 3-day food records were used to gather the nutritional data. Fiber intake in the normal weight group was 18.8 +/- 9.3 grams, the moderately obese consumed 13.3 +/- 5.8 grams of fiber and the severely obese 13.7 +/- 5.7 grams. Total fiber intake in grams was found to be significantly higher in the lean group (p < 0.05) and was positively associated with sex and education level with men and more highly educated individuals consuming more fiber. Using regression analysis total fiber in grams and fiber in g/1000 kcalories was inversely associated with BMI after adjusting for sex, age, education level and income (p < 0.01). A high fiber diet may help to promote a negative energy balance by causing early satiety secondary to gastric distention. Dietitians and physicians need to emphasize the importance of a high fiber diet to their obese patients.
authors.affiliation: Department of Clinical Nutrition, University Hospital, London, Ontario, Canada.
authors.forename: M A
authors.initials: MA
authors.lastname: Alfieri
authors.forename: J
authors.initials: J
authors.lastname: Pomerleau
authors.forename: D M
authors.initials: DM
authors.lastname: Grace
authors.forename: L
authors.initials: L
authors.lastname: Anderson
mesh_terms: D000328:Adult; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D015930:Diet Records; D004043:Dietary Fiber / Q000008:administration & dosage*; D004522:Educational Status; D002149:Energy Intake; D005260:Female; D006801:Humans; D007182:Income; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000209:etiology*; D009767:Obesity, Morbid / Q000209:etiology*; D009864:Ontario; D012016:Reference Values; D012737:Sex Factors