The role of cognitive function in postoperative weight loss outcomes: 36-month follow-up.

Abstract:

BACKGROUND:Cognitive dysfunction is associated with reduced postoperative weight loss up to 2 years following surgery, though the role of cognition at more extended follow-up is not yet understood. Thirty-six months following bariatric surgery, we retrospectively compared obese and non-obese patients on 12-week postoperative cognitive performance. We hypothesized that early postoperative cognitive dysfunction would predict higher body mass index (BMI) and lower percent weight loss (%WL) in the total sample at 36 month follow-up. MATERIALS AND METHODS:Fifty-five individuals undergoing bariatric surgery completed cognitive testing at preoperative baseline and serial postoperative timepoints, including 12 weeks and 36 months. Cognitive test scores were normed for demographic variables. Percent weight loss (%WL) and body mass index (BMI) were calculated at 36-month follow-up. RESULTS:Adjusting for gender, baseline cognitive function, and 12-week %WL, 12-week global cognitive test performance predicted 36 month postoperative %WL and BMI. Partial correlations revealed recognition memory, working memory, and generativity were most strongly related to weight loss. CONCLUSION:Cognitive function shortly after bariatric surgery is closely linked to extended postoperative weight loss at 36 months. Further work is necessary to clarify mechanisms underlying the relationship between weight loss, durability, and cognitive function, including contribution of adherence, as this may ultimately help identify individuals in need of tailored interventions to optimize postoperative weight loss.

journal_name

Obes Surg

journal_title

Obesity surgery

authors

Spitznagel MB,Alosco M,Galioto R,Strain G,Devlin M,Sysko R,Crosby RD,Mitchell JE,Gunstad J

doi

10.1007/s11695-014-1205-2

subject

Has Abstract

pub_date

2014-07-01 00:00:00

pages

1078-84

issue

7

eissn

0960-8923

issn

1708-0428

journal_volume

24

pub_type

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