Evidence map›Paper›PMID 32954485›Full record

ReviewEating and weight disorders : EWD2021

The obesity paradox and diabetes.

Giovanni Gravina, Federica Ferrari, Grazia Nebbiai

Abstract readReview
PubMed Publisher
In one paragraph

Review in Eating and weight disorders : EWD, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

25 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Role of ChREBP-PPARα-FGF21 Axis in Metabolic Dysfunction of MASLD.International journal of molecular sciences · 2025
    Article
  3. Article
  4. Association Between Trunk Fat Mass Index and Diabetes in a Multinational Population.Mayo Clinic proceedings. Innovations, quality & outcomes · 2025
    Article
  5. Biomarkers and Clinical Evaluation in the Detection of Frailty.International journal of molecular sciences · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Body mass index and death by cognitive impairment.Aging clinical and experimental research · 2023
    Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

3 authors at 2 institutions in 1 country.

Giovanni GravinaCenter for Eating Behaviour and Metabolism Disorders, Casa di Cura San Rossore, Pisa, Italy. gravina@sanrossorecura.it.ORCID http://orcid.org/0000-0002-2994-1475
Federica FerrariObesity and Lipodystrophy Center, Endocrinology Unit, University Hospital of Pisa, Pisa, Italy.
Grazia NebbiaiCenter for Eating Behaviour and Metabolism Disorders, Casa di Cura San Rossore, Pisa, Italy.
Azienda Ospedaliera Universitaria Pisana · ITOspedale di Sanremo · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObesity has been proven to be a risk factor for type 2 diabetes mellitus (T2DM) through numerous pathogenetic mechanisms. Unexpectedly, some studies suggest that subjects with overweight/obesity and T2DM have better clinical outcome than their normal weight peers. This finding is described as "obesity paradox" and calls into question the importance of weight loss in this specific population.

objectiveThis article is a narrative overview on the obesity and type 2 diabetes mellitus, particularly regarding the obesity paradox in T2DM patients.

methodsWe used as sources MEDLINE/PubMed, CINAHL, EMBASE, and Cochrane Library, from inception to March 2020; we chose 30 relevant papers regarding the association of obesity with clinical outcome and mortality of patients affected by T2DM.

resultsMany studies report that in patients with T2DM, overweight and obesity are associated with a better prognosis than underweight or normal weight, suggesting the presence of an obesity paradox. However, these studies have numerous limitations due to their mainly retrospective nature and to numerous confounding factors, such as associated pathologies, antidiabetic treatments, smoking habit, lack of data about distribution of body fat or weight history.

conclusionLiterature data regarding the phenomenon of obesity paradox in T2DM patients are controversial due to the several limitations of the studies; therefore in the management of patients with overweight/obesity and T2DM is recommended referring to the established guidelines, which indicate diet and physical activity as the cornerstone of the treatment. LEVEL OF EVIDENCE: Level V: narrative review.

Indexed as

Diabetes Mellitus, Type 2Body Mass IndexHumansObesityOverweightRetrospective StudiesWeight LossObesityObesity paradoxType 2 diabetes

Identifiers

PMID32954485
OpenAlexW3087125283

What Socratic 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 Socratic graph.