World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
82
Citations
24010
World Ranking
16145
National Ranking
536

Gerald Holtmann publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Gerald Holtmann sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 620 publications — 74th percentile

74% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Gerald Holtmann D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Gerald Holtmann sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 82 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Research.com Recognitions

  • 2015 - Fellow of the Australian Academy of Health and Medical Science

Overview

Gerald Holtmann is affiliated with the University of Queensland in Australia and has an extensive publication record predominantly in the field of medicine, with a focus on gastroenterology. Their research spans multiple specialized subfields, including gastroenterology, surgery, epidemiology, pulmonary and respiratory medicine, and oncology.

The scientist's main research interests encompass a variety of gastrointestinal topics. These include:

  • Gastrointestinal motility and disorders
  • Helicobacter pylori-related gastroenterology studies
  • Microscopic colitis
  • Gastroesophageal reflux and treatments
  • Gut microbiota and health
  • Inflammatory bowel disease
  • Liver diseases and immunity

Gerald Holtmann has contributed to numerous peer-reviewed articles, with recent notable publications including:

  • "Autism-related dietary preferences mediate autism-gut microbiome associations" (2021) published in Cell
  • "Small Intestinal Bacterial Overgrowth in Irritable Bowel Syndrome: A Systematic Review and Meta-Analysis of Case-Control Studies" (2020) published in The American Journal of Gastroenterology
  • "Methane positive small intestinal bacterial overgrowth in inflammatory bowel disease and irritable bowel syndrome: A systematic review and meta-analysis" (2021) published in Gut Microbes
  • "Small Intestinal Bacterial Overgrowth in Functional Dyspepsia: A Systematic Review and Meta-Analysis" (2021) published in The American Journal of Gastroenterology
  • "Targeting the Gut Microbiome as a Treatment for Primary Sclerosing Cholangitis: A Conceptional Framework" (2020) published in The American Journal of Gastroenterology

The scientist has published extensively in several key journals in their field, including:

  • Gastroenterology (53 publications)
  • Neurogastroenterology & Motility (13 publications)
  • The American Journal of Gastroenterology (7 publications)
  • Gastrointestinal Endoscopy (7 publications)
  • Alimentary Pharmacology & Therapeutics (5 publications)

Frequent co-authors collaborating with Gerald Holtmann include:

  • Ayesha Shah
  • Natasha A. Koloski
  • Michael Jones
  • Nicholas J. Talley
  • Mark Morrison

In recognition of their work within the medical community, Gerald Holtmann was awarded the title of Fellow of the Australian Academy of Health and Medical Science in 2015.

Best Publications

  • Functional gastroduodenal disorders

    Jan Tack;Nicholas J. Talley;Michael Camilleri;Gerald Holtmann

  • Immune activation in patients with irritable bowel syndrome

    Tobias Liebregts;Birgit Adam;Christoph Bredack;Alexander Röth

  • AGA technical review: Evaluation of dyspepsia ☆ ☆☆

    Nicholas J. Talley;Marc D. Silverstein;Lars Agréus;Olof Nyrén

  • Dietary fiber intervention on gut microbiota composition in healthy adults: a systematic review and meta-analysis.

    Daniel So;Kevin Whelan;Megan Rossi;Mark Morrison

  • Pathophysiology of irritable bowel syndrome.

    Gerald J Holtmann;Alexander C Ford;Alexander C Ford;Nicholas J Talley;Nicholas J Talley

  • A placebo-controlled trial of itopride in functional dyspepsia.

    Gerald Holtmann;Nicholas J Talley;Tobias Liebregts;Birgit Adam

  • New algorithm for the treatment of gastro-oesophageal reflux disease.

    G. N Tytgat;K Mccoll;Jan Tack;G Holtmann

  • Autism-related dietary preferences mediate autism-gut microbiome associations

    Chloe X. Yap;Chloe X. Yap;Anjali K. Henders;Anjali K. Henders;Gail A. Alvares;David L.A. Wood

  • The ion channel TRPA1 is required for normal mechanosensation and is modulated by algesic stimuli.

    Stuart M. Brierley;Stuart M. Brierley;Patrick A. Hughes;Patrick A. Hughes;Amanda J. Page;Amanda J. Page;Kelvin Y. Kwan

  • G-protein β3 subunit 825 CC genotype is associated with unexplained (functional) dyspepsia 1 ☆

    Gerald Holtmann;Winfried Siffert;Sebastian Haag;Norbert Mueller

  • Asia-Pacific consensus on the management of gastroesophageal reflux disease: Update

    Kwong Ming Fock;Nicholas J. Talley;Ronnie Fass;Khean Lee Goh

  • Treatment of irritable bowel syndrome with herbal preparations: results of a double‐blind, randomized, placebo‐controlled, multi‐centre trial

    A. Madisch;G. Holtmann;K. Plein;J. Hotz

  • Development of a new dyspepsia impact scale: the Nepean Dyspepsia Index.

    N J Talley;M Haque;J W Wyeth;N H Stace

  • [Irritable bowel syndrome: German consensus guidelines on definition, pathophysiology and management].

    P. Layer;V. Andresen;C. Pehl;H. Allescher

  • Gastric Helicobacter pylori infection accelerates healing of reflux esophagitis during treatment with the proton pump inhibitor pantoprazole.

    Gerald Holtmann;Clive Cain;Peter Malfertheiner

  • Selective Role for TRPV4 Ion Channels in Visceral Sensory Pathways

    Stuart M. Brierley;Amanda J. Page;Amanda J. Page;Patrick A. Hughes;Patrick A. Hughes;Birgit Adam

  • Prokinetics in patients with gastroparesis: a systematic analysis.

    Andreas Sturm;Gerald Holtmann;Harald Goebell;Guido Gerken

  • Controversies surrounding the comorbidity of depression and anxiety in inflammatory bowel disease patients: a literature review.

    Antonina A. Mikocka-Walus;Antonina A. Mikocka-Walus;Deborah A. Turnbull;Nicole T. Moulding;Ian G. Wilson

  • Efficacy of artichoke leaf extract in the treatment of patients with functional dyspepsia: a six-week placebo-controlled, double-blind, multicentre trial.

    G. Holtmann;B. Adam;S. Haag;W. Collet

  • Asia-Pacific consensus on the management of gastro-oesophageal reflux disease: An update focusing on refractory reflux disease and Barrett's oesophagus

    Kwong Ming Fock;Nicholas Talley;Khean Lee Goh;Kentaro Sugano

Frequent Co-Authors

Nicholas J. Talley
Nicholas J. Talley University of Newcastle Australia
Guido Gerken
Guido Gerken University of Duisburg-Essen
Mark Morrison
Mark Morrison University of Queensland
Antonina Mikocka-Walus
Antonina Mikocka-Walus Deakin University
Deborah Turnbull
Deborah Turnbull University of Adelaide
Peter Malfertheiner
Peter Malfertheiner Otto-von-Guericke University Magdeburg
Stuart M. Brierley
Stuart M. Brierley Flinders University
Jan Tack
Jan Tack KU Leuven
Richard H. Hunt
Richard H. Hunt McMaster University
Ian G Wilson
Ian G Wilson University of Wollongong

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