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Objective: Despite solid evidence of an association between centralized body fatness and subsequent disease risk, little is known about the consequences of changes in body fat distribution. Recently it was shown that large hip circumference (HC), measured once, was protective against total and cardiovascular disease (CVD) mortality in women but that gain or loss in HC was unrelated to these outcomes. This study examines whether a 6-year change in waist circumference (WC) predicts mortality and CVD in the same study sample.Methods: Baseline WC and 6-year change in WC as predictors of mortality and CVD were analyzed in 2,492 women from the Danish MONICA study and the Prospective Population Study of Women in Gothenburg, Sweden.Results: Increase in WC was significantly associated with increased subsequent mortality and CVD adjusting for BMI and other covariates, with some evidence of a J-shaped association. Associations between increase in WC and outcomes were restricted to women with normal weight at baseline and to ever-smokers.Conclusions: In contrast to changes in HC which did not predict mortality and CVD, a 6-year increase in WC is strongly predictive, particularly among initially lean women and ever-smokers. This implies the importance of developing strategies to prevent central fat deposition. [ABSTRACT FROM AUTHOR]