OBJECTIVE: Assessment of determinants for relatively successful weight maintenance in women after diet-induced weight reduction. DESIGN: Subjects followed two weight cycles over two years, each cycle starting with a Very Low Energy Diet (VLED) (2.8 MJad), in a free-living situation. They completed the Herman Polivy Restraint Questionnaire and the Three Factor Eating Questionnaire twice, that is, before and during the ®rst VLED. SUBJECTS: Twenty seven obese women, body mass index (BMI) (28±38 kgam 2 ), age (19±53 y), being premenopausal and healthy, participated twice in the energy restriction periods with one year follow-up. MEASUREMENTS: Weight and body composition were measured at weeks 0, 8, 60, 68 and 120 after the start of the ®rst VLED. Scores on the restraint scales before and during the ®rst VLED were analysed. Percentages regain after one year and after two years follow-up were related to these scores. RESULTS: Three groups appeared with respect to success regarding weight maintenance. Group 1 (successful): twice a regain`50% of weight loss; group 2 (partly successful): once a regain`50% of weight loss and group 3 (unsuccessful): twice a regain of b 50% of weight loss. Percentage regain was negatively correlated to an increase in cognitive restrained eating behaviour (r 0.8; P 0.0001). A change in attitude with respect to food intake, expressed as an increase in cognitive restraint, and as a positive relationship between cognitive restraint and disinhibition was related to successful weight maintenance. CONCLUSION: An increase in cognitive restraint from before, to during, the diet, and a positive correlation between cognitive restraint and disinhibition, are two determinants representing eating behaviour for successful weight maintenance.