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Size Acceptance and Intuitive Eating Improve Health for Obese, Female Chronic Dieters

      Abstract

      Objective

      Examine a model that encourages health at every size as opposed to weight loss. The health at every size concept supports homeostatic regulation and eating intuitively (ie, in response to internal cues of hunger, satiety, and appetite).

      Design

      Six-month, randomized clinical trial; 2-year follow-up.

      Subjects

      White, obese, female chronic dieters, aged 30 to 45 years (N=78).

      Setting

      Free-living, general community.

      Interventions

      Six months of weekly group intervention (health at every size program or diet program), followed by 6 months of monthly aftercare group support.

      Main outcome measures

      Anthropometry (weight, body mass index), metabolic fitness (blood pressure, blood lipids), energy expenditure, eating behavior (restraint, eating disorder pathology), and psychology (self-esteem, depression, body image). Attrition, attendance, and participant evaluations of treatment helpfulness were also monitored.

      Statistical analysis performed

      Analysis of variance.

      Results

      Cognitive restraint decreased in the health at every size group and increased in the diet group, indicating that both groups implemented their programs. Attrition (6 months) was high in the diet group (41%), compared with 8% in the health at every size group. Fifty percent of both groups returned for 2-year evaluation. Health at every size group members maintained weight, improved in all outcome variables, and sustained improvements. Diet group participants lost weight and showed initial improvement in many variables at 1 year; weight was regained and little improvement was sustained.

      Conclusions

      The health at every size approach enabled participants to maintain long-term behavior change; the diet approach did not. Encouraging size acceptance, reduction in dieting behavior, and heightened awareness and response to body signals resulted in improved health risk indicators for obese women.
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      Biography

      L. Bacon is an associate nutritionist with the Agricultural Experiment Station, University of California, Davis, and a nutrition professor with the Biology Department, City College of San Francisco, San Francisco, CA.

      Biography

      J. S. Stern is a distinguished professor with the Department of Nutrition and the Division of Endocrinology, Clinical Nutrition and Cardiovascular Medicine in the Department of Internal Medicine, University of California, Davis.

      Biography

      M. D. Van Loan is a research physiologist.

      Biography

      N. L. Keim is a research chemist with the US Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, CA.