Evidence map›Paper›PMID 28475603›Full record

ArticlePloS one2017

The impact of obesity on neuropsychological functioning in adults with and without major depressive disorder.

Maria R Restivo, Margaret C McKinnon, Benicio N Frey, Geoffrey B Hall, Wasimuddin Syed, Valerie H Taylor

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
2.9field-weighted citation impact, top 9% of its field
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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 37 citations in OpenAlex.

  1. Probiotics for the treatment of depression and its comorbidities: A systemic review.Frontiers in cellular and infection microbiology · 2023
    Pooled it
  2. Pooled it
  3. Interactive Relations of Body Mass Index, Cardiorespiratory Fitness, and Sex to Cognitive Function in Older Adults.Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists · 2024
    Article
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  10. Review
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  15. Why primary obesity is a disease?Journal of translational medicine · 2019
    Review
  16. Article
  17. Cognitive function and quality of life in bariatric surgery candidates.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2018
    Article
  18. 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 at 4 institutions in 1 country.

Maria R RestivoWomens College Research Institute, Women's College Hospital, Toronto, Ontario, Canada.ORCID http://orcid.org/0000-0003-2519-9143
Margaret C McKinnonDepartment of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada.
Benicio N FreyDepartment of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada.
Geoffrey B HallDepartment of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario, Canada.
Wasimuddin SyedFaculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.
Valerie H TaylorWomens College Research Institute, Women's College Hospital, Toronto, Ontario, Canada.
McMaster University · CASt. Joseph’s Healthcare Hamilton · CAUniversity of Toronto · CAWomen's College Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEvidence suggests obesity exerts a negative impact on cognition. Major Depressive Disorder (MDD) is also linked to problems in cognitive functioning. Obesity is highly prevalent in individuals with MDD and is linked to a failure to return to a full level of functioning. The study's objective was to investigate the effect of obesity on cognitive impairment in participants with MDD.

methodsThis study compared cognitive performance in obese individuals with MDD and two control populations (obese individuals without a psychiatric illness and non-obese controls). A standardized battery of neuropsychological tests specifically designed to assess performance in declarative memory, executive functioning, processing speed and attention was administered. Mood ratings, physical measurements, nutritional and health questionnaires were also completed.

resultsWe observed a consistent pattern across measures of memory, executive functioning, attention and processing speed. Whereas healthy controls performed better than both bariatric groups across the majority of measures administered, bariatric controls tended to outperform bariatric MDD patients. LIMITATIONS: The overall sample size of our study was small and thus largely explorative in nature. However, it provides compelling results (while controlling for extraneous variables such as medication load, nutritional status and common metabolic comordidities) that strongly urges for further investigation and study replication with larger sample sizes.

conclusionsWe found obesity has a subtle impact on cognition in obese individuals, and when obesity is present in individuals with MDD, this impact may be significant. It is important to minimize all modifiable variables that can add to cognitive burden in this population.

Indexed as

Neuropsychological TestsAdultFemaleHumansMajor Depressive DisorderMaleMiddle AgedObesity

Identifiers

PMID28475603
PMCPMC5419516
OpenAlexW2610843335

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.