Torsten Olbers

15.8k total citations · 2 hit papers
128 papers, 6.3k citations indexed

About

Torsten Olbers is a scholar working on Surgery, Physiology and Pharmacy. According to data from OpenAlex, Torsten Olbers has authored 128 papers receiving a total of 6.3k indexed citations (citations by other indexed papers that have themselves been cited), including 113 papers in Surgery, 55 papers in Physiology and 26 papers in Pharmacy. Recurrent topics in Torsten Olbers's work include Bariatric Surgery and Outcomes (110 papers), Diet and metabolism studies (52 papers) and Body Contouring and Surgery (28 papers). Torsten Olbers is often cited by papers focused on Bariatric Surgery and Outcomes (110 papers), Diet and metabolism studies (52 papers) and Body Contouring and Surgery (28 papers). Torsten Olbers collaborates with scholars based in Sweden, United Kingdom and Ireland. Torsten Olbers's co-authors include Carel W. le Roux, Hans Lönroth, Lars Fändriks, Malin Werling, Anna Laurenius, Stephen R. Bloom, Erlend T. Aasheim, Torgeir T. Søvik, Marco Bueter and Andrew J. Beamish and has published in prestigious journals such as Annals of Internal Medicine, Gastroenterology and PLoS ONE.

In The Last Decade

Torsten Olbers

124 papers receiving 6.1k citations

Hit Papers

Gut Hormones as Mediators of Appetite and Weight Loss Aft... 2007 2026 2013 2019 2007 2015 100 200 300 400 500
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Gut Hormones as Mediators of Appetite and Weight Loss After Roux-en-Y Gastric Bypass
    2007 584 citations Carel W. le Roux, Malin Werling et al. profile →
  2. Roux-en-Y Gastric Bypass and Vertical Banded Gastroplasty Induce Long-Term Changes on the Human Gut Microbiome Contributing to Fat Mass Regulation
    2015 555 citations Malin Werling, Torsten Olbers et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Torsten Olbers Sweden 42 4.5k 3.4k 1.0k 824 780 128 6.3k
Wendy A. Brown Australia 39 4.4k 1.0× 2.1k 0.6× 1.1k 1.0× 466 0.6× 240 0.3× 175 6.5k
Martin Fried Czechia 27 2.9k 0.6× 2.3k 0.7× 767 0.7× 938 1.1× 306 0.4× 124 6.2k
Carroll M. Harmon United States 37 2.8k 0.6× 1.0k 0.3× 676 0.7× 402 0.5× 414 0.5× 141 4.9k
Gladys Strain United States 43 1.8k 0.4× 1.6k 0.5× 513 0.5× 1.5k 1.8× 327 0.4× 88 5.0k
Anna‐Karin Lindroos Sweden 11 2.8k 0.6× 1.8k 0.5× 854 0.8× 699 0.8× 191 0.2× 14 3.8k
Picard Marceau Canada 40 2.9k 0.6× 2.2k 0.6× 480 0.5× 975 1.2× 242 0.3× 92 6.0k
Ignace M. C. Janssen Netherlands 40 3.4k 0.8× 1.7k 0.5× 432 0.4× 502 0.6× 210 0.3× 127 4.8k
Bartolomé Burguera United States 40 2.0k 0.4× 2.7k 0.8× 379 0.4× 1.9k 2.4× 1.8k 2.3× 119 6.5k
Maria L. Collazo–Clavell United States 34 2.7k 0.6× 1.9k 0.6× 664 0.6× 749 0.9× 112 0.1× 70 4.9k
José Carlos Pareja Brazil 30 1.7k 0.4× 1.5k 0.5× 336 0.3× 999 1.2× 428 0.5× 94 3.6k

Countries citing papers authored by Torsten Olbers

Since Specialization
Citations

This map shows the geographic impact of Torsten Olbers's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Torsten Olbers with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Torsten Olbers more than expected).

Fields of papers citing papers by Torsten Olbers

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Torsten Olbers. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Torsten Olbers. The network helps show where Torsten Olbers may publish in the future.

Co-authorship network of co-authors of Torsten Olbers

This figure shows the co-authorship network connecting the top 25 collaborators of Torsten Olbers. A scholar is included among the top collaborators of Torsten Olbers based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Torsten Olbers. Torsten Olbers is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
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Olbers, Torsten, Hilde Risstad, Morten Wang Fagerland, et al.. (2024). Ten-Year Outcomes Following Roux-en-Y Gastric Bypass vs Duodenal Switch for High Body Mass Index. JAMA Network Open. 7(6). e2414340–e2414340. 8 indexed citations
3.
Andersson, Ellen, et al.. (2024). Impact of bariatric surgery on premenopausal women’s womanliness: A qualitative systematic review and meta-synthesis. PLoS ONE. 19(8). e0308059–e0308059. 2 indexed citations
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Bruze, Gustaf, Kajsa Järvholm, Johan Ottosson, et al.. (2023). Mental health from 5 years before to 10 years after bariatric surgery in adolescents with severe obesity: a Swedish nationwide cohort study with matched population controls. The Lancet Child & Adolescent Health. 8(2). 135–146. 6 indexed citations
7.
Thorell, Anders, et al.. (2022). Surgical technique in constructing the jejunojejunostomy and the risk of small bowel obstruction after Roux-en-Y gastric bypass. Surgery for Obesity and Related Diseases. 18(9). 1151–1159. 4 indexed citations
8.
Järvholm, Kajsa, Torsten Olbers, Markku Peltonen, et al.. (2021). Depression, anxiety, and suicidal ideation in young adults 5 years after undergoing bariatric surgery as adolescents. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari).
9.
Xiao, Yao, Almantas Maleckas, Mikael Wirén, et al.. (2021). The Jejunojejunostomy: an Achilles Heel of the Roux-en-Y Gastric Bypass Construction. Obesity Surgery. 31(12). 5141–5147. 11 indexed citations
10.
Järvholm, Kajsa, Torsten Olbers, & My Engström. (2021). Patients’ views of long-term results of bariatric surgery for super-obesity: sustained effects, but continuing struggles. Surgery for Obesity and Related Diseases. 17(6). 1152–1164. 13 indexed citations
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Janson, Annika, Kajsa Järvholm, Eva Gronowitz, et al.. (2020). A randomized controlled trial comparing intensive non-surgical treatment with bariatric surgery in adolescents aged 13–16 years (AMOS2): Rationale, study design, and patient recruitment. Contemporary Clinical Trials Communications. 19. 100592–100592. 13 indexed citations
13.
Dahlgren, Jovanna, Eva Gronowitz, Annika Janson, et al.. (2020). High prevalence of neurodevelopmental problems in adolescents eligible for bariatric surgery for severe obesity. Acta Paediatrica. 110(5). 1534–1540. 11 indexed citations
14.
Beamish, Andrew J., Wouter K. G. Leclercq, Edgar van Mil, et al.. (2020). Laparoscopic roux-en-Y gastric bypass versus sleeve gastrectomy for teenagers with severe obesity - TEEN-BEST: study protocol of a multicenter randomized controlled trial. BMC Surgery. 20(1). 117–117. 3 indexed citations
15.
Järvholm, Kajsa, Gustaf Bruze, Markku Peltonen, et al.. (2020). 5-year mental health and eating pattern outcomes following bariatric surgery in adolescents: a prospective cohort study. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari). 1 indexed citations
16.
Olbers, Torsten, Markku Peltonen, Johanna Österberg, et al.. (2019). BEST: Bypass equipoise sleeve trial; rationale and design of a randomized, registry-based, multicenter trial comparing Roux-en-Y gastric bypass with sleeve gastrectomy. Contemporary Clinical Trials. 84. 105809–105809. 14 indexed citations
17.
Scholtz, Samantha, Alexander D. Miras, Navpreet Chhina, et al.. (2013). Obese patients after gastric bypass surgery have lower brain-hedonic responses to food than after gastric banding. Gut. 63(6). 891–902. 207 indexed citations
18.
Olbers, Torsten, Eva Gronowitz, Malin Werling, et al.. (2012). Two-year outcome of laparoscopic Roux-en-Y gastric bypass in adolescents with severe obesity: results from a Swedish Nationwide Study (AMOS). STM:n Hallinnonalan avoin julkaisuarkisto (Julkari). 1 indexed citations
19.
Aasheim, Erlend T., Amany Elshorbagy, Lien My Diep, et al.. (2011). Effect of bariatric surgery on sulphur amino acids and glutamate. British Journal Of Nutrition. 106(3). 432–440. 28 indexed citations
20.
Bueter, Marco, Torsten Olbers, Maggie Haitian Wang, et al.. (2009). Gastric Bypass Increases Energy Expenditure in Rats. Gastroenterology. 138(5). 1845–1853.e1. 174 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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