Energy intake and dietary macronutrient content in women with anorexia nervosa and volunteers
Gwirtzman, H.E. | Kaye, W.H. | Curtis, S.R. | Lyter, L.M.
This study was designed to compare the dietary intakes of patients with anorexia nervosa and normal controls. Twenty-four patients hospitalized for treatment of anorexia nervosa were compared with 10 normal controls. Patients ate a self-selected diet and maintained their admission weight to within 1.0 kg during this period (19 +/- 3 days). Food chosen by each subject was weighed before and after meals, and intake was determined to be the difference. Intakes of food energy, protein, fat, and carbohydrate were calculated. Patients were closely monitored to ensure that no disposal of food occurred. Patients with anorexia nervosa had a mean daily energy intake of 1,017 +/- 54 kcal (mean +/- SEM), significantly lower than the mean energy intake for controls (1,651 +/- 108 kcal). Similarly, mean intakes of macronutrients (41 +/- 4 gm protein, 34 +/- 2 gm fat, and 136 +/- 9 gm carbohydrate) were significantly lower for patients than for controls (68.5 +/- gm protein, 65 +/- 6 gm fat, and 204 +/- 13 gm carbohydrate). However, when protein, fat, and carbohydrate were assessed as a percent of total calories, there were no significant differences between patients and controls. There were also no significant differences in calories consumed per kilogram body weight. Underweight patients with anorexia nervosa who maintain their weight on an unrestricted hospital diet have energy intake per kilogram body weight and dietary macronutrient content indistinguishable from those of normal women.
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