Evidence map›Paper›PMID 38668820›Full record

SynthesisObesity surgery2024

Changes in Cognitive Function Following Bariatric Surgery: An Updated Systematic Review.

Isaac Hathaway, Oshiokhe Esther Momodu, David M Williams, Andrew J Beamish, Jonathan Barry, Jeffrey W Stephens

Abstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Obesity surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Article
  2. Effects of obesity on brain health and cognition.Nature reviews. Neurology · 2026
    Review
  3. The effects of bariatric surgery on dementia in patients with diabetes and obesity.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  4. Review
  5. Review
  6. Observational
  7. Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Isaac HathawayDiabetes Centre, Morriston Hospital, Swansea Bay University Health Board, Swansea, SA6 6NL, UK. isaac.hathaway3@wales.nhs.uk.ORCID 0009-0009-6702-0966
Oshiokhe Esther MomoduSwansea University Medical School, Swansea University, Swansea, SA2 8QA, UK.
David M WilliamsDiabetes Centre, Morriston Hospital, Swansea Bay University Health Board, Swansea, SA6 6NL, UK.
Andrew J BeamishWelsh Institute of Metabolic & Obesity Surgery, Morriston Hospital, Swansea Bay University Health Board, Swansea, SA6 6NL, UK.
Jonathan BarryWelsh Institute of Metabolic & Obesity Surgery, Morriston Hospital, Swansea Bay University Health Board, Swansea, SA6 6NL, UK.
Jeffrey W StephensDiabetes Centre, Morriston Hospital, Swansea Bay University Health Board, Swansea, SA6 6NL, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since a previous systematic review published in 2016, there have been further studies investigating the association of changes in cognitive function following bariatric surgery. All studies since the original review that reported at least one element of cognitive function before and after bariatric surgery were eligible. A total of 137 additional studies were identified; 13 were included in addition to the 18 studies previously. Almost all studies reported improvements in at least one domain. Most revealed improvements were limited to a few domains and were not universal. Further findings investigated cognitive function improvement in relation to procedure choice, and mental health or quality of life post-surgery. Further high-powered studies are still necessary, but these findings support the impact of bariatric surgery on cognitive function in obesity.

Indexed as

Bariatric SurgeryCognitionObesity, MorbidQuality of LifeAdultFemaleHumansMaleMiddle AgedTreatment OutcomeAlzheimer’s diseaseBariatric surgeryCognitionCognitive functionDementiaGastric bandGastric bypassGastric surgeryMetabolic surgeryRoux-en-Y gastric bypassSleeve gastrectomy

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.