Authors: Richard I Lanyon and Barbara M Maxwell
It has been stated that the area of greatest concern in gastric bypass surgery (GBS) is not the achievement of an initial weight loss, but sustaining this loss and continuing to lose weight over time. This statement is consistent with the authors’ own work, in which, after a mean weight loss of 45.61 kg (16.42 BMI) after the first post-operative year (0-1 year), the mean change over the subsequent two years (1-3 year) was essentially zero (0.28 kg; 0.15 BMI). The authors also found that the best pre-operative predictors of the 1-3 year weight loss were mostly different from the predictors of the 0-1 year weight loss as reported by Lanyon and Maxwell.
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