The association of 1‐year weight loss from bariatric surgery and self‐reported sleep: a prospective cohort

Objective This study examined the association of weight loss following bariatric surgery with self‐reported sleep quality after accounting for other sleep‐related factors. Methods Participants were from the Bariatric Experience Long Term (BELONG) study. Participants completed a survey up to 6 months before surgery and approximately 1 year after surgery. The Pittsburgh Sleep Quality Index (PSQI) was used to measure sleep quality. One‐year percentage total weight loss (%TWL) was determined from electronic medical records. Covariates included demographics, Charlson Comorbidity Index, geocoded variables to assess neighborhood quality, and physical activity. The authors assessed the association between %TWL at 1 year and PSQI component scores with separate cumulative logit models. Results There were 997 participants in the analytic cohort. Participants were 86.2% women, 37.0% Hispanic, and 13.7% Black adults. Mean one‐year %TWL was 26.3 (SD 8.7). Each 1% increase in %TWL was associated with a 3% better daytime dysfunction score (odds ratio = 1.03; 95% CI: 1.02‐1.05) and a 2% better sleep quality score (odds ratio = 1.02; 95% CI: 1.00‐1.03). No significant differences were found for the other PSQI components. Conclusions Weight loss from bariatric surgery was associated with better self‐reported sleep at 1 year. For people undergoing bariatric surgery, there may be an added benefit of better sleep.