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Cognitive function predicts 24-month weight loss success after bariatric surgery
Mary Beth Spitznagel1, Michael Alosco, Gladys Strain
1Kent State University, Kent, Ohio; Summa Health System, Akron, Ohio.
Summary
Cognitive function 12 weeks after bariatric surgery predicts long-term weight loss. Better attention, executive function, and memory correlate with lower BMI and greater weight loss at 24 months.
Area of Science:
- Bariatric Surgery Outcomes
- Cognitive Function Assessment
- Weight Management
Background:
- Cognitive impairment is common in bariatric surgery patients, affecting attention/executive and memory functions.
- Previous studies linked cognitive issues to reduced weight loss 12 months post-surgery.
- Longer-term effects of cognitive function on weight loss after bariatric surgery require further investigation.
Purpose of the Study:
- To prospectively examine the independent contribution of cognitive function to weight loss 24 months after bariatric surgery.
- To determine if postoperative cognitive function predicts body mass index (BMI) and percent total weight loss (%WL) at 24-month follow-up.
Main Methods:
- Utilized data from 57 participants in the Longitudinal Assessment of Bariatric Surgery (LABS) project.
- Cognitive evaluations were conducted at baseline, 12 weeks, and 24 months post-surgery.
- Body mass index (BMI) and percent total weight loss (%WL) were calculated at 24-month follow-up.
Main Results:
- Improved cognitive function at 12 weeks post-surgery predicted higher %WL and lower BMI at 24 months.
- Specific domains, including attention/executive function and memory, showed a strong relationship with reduced BMI and increased %WL.
- Postoperative cognitive performance is a significant predictor of long-term weight loss outcomes.
Conclusions:
- Cognitive performance assessed shortly after bariatric surgery predicts greater long-term weight loss and lower BMI at 24 months.
- Further research is necessary to understand the role of adherence to postoperative guidelines in this relationship.
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