Observational studyObesity (Silver Spring, Md.)2014
Improved memory function two years after bariatric surgery.
Observational study in Obesity (Silver Spring, Md.), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 73 papers, 5 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Evaluation and Follow up of Emotional Regulation, Cognition, Impulsivity and Reward System in Obesity, and Determination of Its Biopsychosocial Risk Factors: A Prospective Study of Obese Patients Before and After Bariatric Surgery
Cognitive Impairment, Obesity, and the Effects of Bariatric Surgery
Who cites it
73 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- Changes in Cognitive Function Following Bariatric Surgery: An Updated Systematic Review.Obesity surgery · 2024Pooled it
- Bariatric Surgery Improves Cognition Function in the Patients with Obesity: A Meta-Analysis.Obesity surgery · 2024Pooled it
- The Executive Functions in Overweight and Obesity: A Systematic Review of Neuropsychological Cross-Sectional and Longitudinal Studies.Frontiers in psychology · 2019Pooled it
- Obesity and episodic memory function.The journal of physiological sciences : JPS · 2018Pooled it
- Changes in Cognitive Function Following Bariatric Surgery: a Systematic Review.Obesity surgery · 2016Pooled it
- Brain effect of bariatric surgery in people with obesity.International journal of obesity (2005) · 2022Trial
- Short-term improvements in cognitive function following vertical sleeve gastrectomy and Roux-en Y gastric bypass: a direct comparison study.Surgical endoscopy · 2020Trial
- Effect of a long-term intensive lifestyle intervention on prevalence of cognitive impairment.Neurology · 2017Trial
- Adipose tissue plays a crucial role in obesity-induced postoperative neurocognitive disorders.Journal of translational medicine · 2026Article
- Obesity-Related Cognitive Impairment: An Update Overview of Mechanisms and Treatments.Expert reviews in molecular medicine · 2026Review
- Association of Skeletal Muscle Strength with Cognitive Performance After Metabolic Bariatric Surgery.Journal of clinical medicine · 2026Article
- Memory Function, Weight Loss, and Eating Disorder Psychopathology in Bariatric Surgery Patients: A 5-Year Follow-Up Study.Obesity facts · 2026Article
- A Mendelian Randomization Study and Experimental Validation Investigating the Potential Relationship Among Interleukin-6 Receptor Subunit Beta, Obesity, and Alzheimer's Disease.Brain and behavior · 2025Article
- Letter to the Editor: Cognitive Improvement Following Bariatric Surgery Is Associated with Enhanced Hippocampal Activation and Reduction in Visceral and Ectopic Fat Deposition.Obesity surgery · 2025Article
- The relationship between physical activity, sedentary time, and cognitive function following bariatric surgery.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2025Article
- Psychological Traits of Bariatric Surgery Candidates and Predictors of Outcomes.Journal of personalized medicine · 2025Article
- Assessment of Obesity-related Metabolic Conditions: a novel objective scoring system better informs metabolic disease severity.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2025Article
- What is the disease burden from childhood and adolescent obesity?: a narrative review.Journal of Yeungnam medical science · 2024Article
- Response to Dr. Buchwald.Obesity surgery · 2024Article
- Long-Term Brain Structure and Cognition Following Bariatric Surgery.JAMA network open · 2024Article
13 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
Abstract
objectiveObesity is as an independent risk factor for poor neurocognitive outcomes, including Alzheimer's disease. Bariatric surgery has recently been shown to result in improved memory at 12-weeks postoperatively. However, the long-term effects of bariatric surgery on cognitive function remain unclear. DESIGN AND
methodsEighty-six individuals (63 bariatric surgery patients, 23 obese controls) were recruited from a prospective study examining the neurocognitive effects of bariatric surgery. All participants completed self-report measurements and a computerized cognitive test battery prior to surgery and at 12-week and 24-month follow-up; obese controls completed measures at equivalent time points.
resultsBariatric surgery patients exhibited high rates of pre-operative cognitive impairments in attention, executive function, memory, and language. Relative to obese controls, repeated measures ANOVA showed improvements in memory from baseline to 12-weeks and 24-months postoperatively (P < 0.05). Regression analyses controlling for baseline factors revealed that a lower BMI at 24-months demonstrated a trend toward significance for improved memory (β = -.30, P = 0.075).
conclusionThese findings suggest that cognitive benefits of bariatric surgery may extend to 24-months postoperatively. Larger prospective studies with extended follow-up periods are needed to elucidate whether bariatric surgery decreases risk for cognitive decline and possibly the development of dementia.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.