Evidence map›Paper›PMID 34819222›Full record

ReviewDeutsches Arzteblatt international2022

Obesity Surgery—Weight Loss, Metabolic Changes, Oncological Effects, and Follow-Up.

Jodok Fink, Gabriel Seifert, Matthias Blüher, Stefan Fichtner-Feigl, Goran Marjanovic

Open access · greenAbstract readReview
In one paragraph

Review in Deutsches Arzteblatt international, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
12.9field-weighted citation impact, top 1% 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

41 citing papers in PubMed, 61 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Review
  6. Analysis of the nutritional profile after endoscopic gastroplasty in the treatment of obesity.Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery · 2026
    Observational
  7. Review
  8. Article
  9. Advances and future directions in endoscopic bariatric therapies.World journal of gastrointestinal endoscopy · 2025
    Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Observational
  18. Bariatric surgery: pre-operative comorbidities, postoperative results, and complications: a single-center retrospective cohort analysis.Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery · 2025
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Jodok FinkDepartment of General and Visceral Surgery, Center for Obesity and Metabolic Surgery, Medical Center, University of Freiburg; Helmholtz-Institute for Metabolic, Obesity and Vascular Research, (HI-MAG), Helmholtz Zentrum München at the University of Leipzig and the Medical Faculty of Leipzig AöR.
Gabriel Seifert
Matthias Blüher
Stefan Fichtner-Feigl
Goran Marjanovic
Helmholtz Centre for Environmental Research · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn 2017, the prevalence of obesity (BMI ≥= 30 kg/m2) in Germany was approximately 16%. Obesity increases an individual's risk of developing type 2 diabetes (T2DM) and arterial hypertension; it also increases overall mortality. Consequently, effective treatment is a necessity. Approximately 20 000 bariatric operations are performed in Germany each year.

methodsThis review is based on pertinent publications retrieved by a selective search in the PubMed and Cochrane databases and on current German clinical practice guidelines.

resultsThe types of obesity surgery most commonly performed in Germany, Roux-en-Y gastric bypass and sleeve gastrectomy, lead to an excess weight loss of 27-69% ≥= 10 years after the procedure. In obese patients with T2DM, the diabetes remission rate ≥= 10 years after these procedures ranges from 25% to 62%. Adjusted regression analyses of data from large registries have shown that the incidence of malignancies is 33% lower in persons who have undergone obesity surgery compared to control subjects with obesity (unadjusted incidence 5.6 versus 9.0 cases per 1000 person-years). The operation can cause vitamin deficiency, surgical complications, gastroesophageal reflux, and dumping syndrome. Therefore, lifelong follow-up is necessary.

conclusionIn view of an increasing number of patients undergoing bariatric surgery, it will probably not be feasible in the future for lifelong follow-up to be provided exclusively in specialized centers.

Indexed as

Bariatric SurgeryDiabetes Mellitus, Type 2Gastric BypassLaparoscopyObesity, MorbidHumansObesityTreatment Outcome

Identifiers

PMID34819222
PMCPMC9059860
OpenAlexW3216568596

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.