Science Explorer Back to mapMap
Discussion
Subfield · Medicine

Gastroenterology research

Gastroenterology is a subfield of Medicine. Science Explorer counts 146k research works in it since 1950. 10.1% of them reached the world's top 10% most cited for their field and year.

In short: branch of medicine focused on the digestive system and its disorders.

Research works
146k
fractional, since 1950
In the world top 10%
15k
per year above
Top-10% rate
10.1%
share of its works in the world top 10%
Topics
5
Growth, 2018-21 → 2022-25
+14%
the tick is no change
Largest producer
United States
30% of the 10 largest, 2022-now
Gastroenterology

This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.

What is Gastroenterology research about, and what is growing?

By the world's output in 2021-25, its most used keywords are Intestinal Permeability, Gastrointestinal Disorders, Irritable Bowel Syndrome, Imatinib Mesylate, Sunitinib, Esophageal Motility Disorders. Gaining share since 2011-15: Gastrointestinal Disorders, Irritable Bowel Syndrome.

▲ gaining share of this field◆ holding its share▼ losing share

Size is the world's fractional works in 2021-25 in the topics tagged with each word; colour compares the word's share of this field with 2011-15. Each links to the topic it comes from most.

All 11 words, with their numbers
  1. Intestinal Permeability13k◆ 1.10×2 topics
  2. Gastrointestinal Disorders8,862▲ 1.16×1 topic
  3. Irritable Bowel Syndrome8,862▲ 1.16×1 topic
  4. Imatinib Mesylate7,550◆ 0.91×1 topic
  5. Sunitinib7,550◆ 0.91×1 topic
  6. Esophageal Motility Disorders7,494◆ 1.00×1 topic
  7. Gastroesophageal Reflux Disease7,494◆ 1.00×1 topic
  8. Capsule Endoscopy4,214◆ 0.93×1 topic
  9. Upper Gastrointestinal Bleeding4,214◆ 0.93×1 topic
  10. Celiac Disease3,868◆ 0.97×1 topic
  11. Gluten Sensitivity3,868◆ 0.97×1 topic

Which countries lead Gastroenterology research?

On research quality in 2022-now, the United States, China and Germany rank highest in Gastroenterology. By volume, the United States and China publish the most (6k and 5.1k works in 2022-now).

By research quality, 2022-now

  1. 1 United States #1 all time 0.94× citation excellence · 1.60× journals · 100% breadth 11.2% top 10% · 5.2k works
  2. 2 China #4 all time 1.29× citation excellence · 0.96× journals · 100% breadth 13.5% top 10% · 4.3k works
  3. 3 Germany #2 all time 1.41× citation excellence · 1.50× journals · 100% breadth 9.3% top 10% · 758 works
  4. 4 United Kingdom #3 all time 1.06× citation excellence · 1.38× journals · 100% breadth 13.2% top 10% · 1.1k works
  5. 5 France #5 all time 1.49× citation excellence · 1.42× journals · 100% breadth 12.2% top 10% · 509 works
  6. 6 Netherlands #6 all time 1.79× citation excellence · 1.52× journals · 100% breadth 17.8% top 10% · 286 works
  7. 7 Italy #11 all time 1.68× citation excellence · 0.67× journals · 100% breadth 16.5% top 10% · 990 works
  8. 8 Australia #7 all time 1.35× citation excellence · 1.33× journals · 100% breadth 13.7% top 10% · 441 works
  9. 9 Canada #8 all time 1.16× citation excellence · 1.35× journals · 100% breadth 13.9% top 10% · 447 works
  10. 10 South Korea #14 all time 1.27× citation excellence · 0.88× journals · 100% breadth 12.0% top 10% · 719 works

The track on each row is that row's top-10% rate. The ranking itself is the quality score, which compares the rate with what each place's own topics predict, adds its share of papers in the Nature Index journals, and counts output and breadth too.

Of 23 countries ranked in Gastroenterology. Ranked on the quality score for 2022-now; the bracket is the all-time rank.

All countries ranked in Gastroenterology

By volume, 2022-now

  1. 1 United States 6k works
  2. 2 China 5.1k works
  3. 3 Japan 2k works
  4. 4 India 1.4k works
  5. 5 United Kingdom 1.3k works
  6. 6 Italy 1.2k works
  7. 7 Germany 883 works
  8. 8 South Korea 824 works
  9. 9 Spain 741 works
  10. 10 Türkiye 669 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 29.7%China: 25.4%Japan: 10.2%India: 6.9%6 others listed: 27.9%30%largest
United States5,973 · 29.7%China5,099 · 25.4%Japan2,042 · 10.2%India1,392 · 6.9%6 others listed5,608 · 27.9%

Shares of the rows listed above, not of the whole node.

Which institutions lead Gastroenterology research?

Harvard University (United States) ranks first in Gastroenterology on research quality in 2022-now, followed by Mayo Clinic and Sun Yat-sen University.

By research quality, 2022-now

  1. 1 Harvard University United States · Cambridge · #1 all time 17.1% top 10% · 224 works
  2. 2 Mayo Clinic United States · Rochester · #2 all time 14.8% top 10% · 187 works
  3. 3 Sun Yat-sen University China · Guangzhou · #17 all time 15.2% top 10% · 129 works
  4. 4 Peking University China · Beijing · #28 all time 16.0% top 10% · 79 works
  5. 5 University of Michigan United States · Ann Arbor · #9 all time 17.0% top 10% · 70 works
  6. 6 Inserm France · Paris · #10 all time 16.6% top 10% · 64 works
  7. 7 Northwestern University United States · Evanston · #7 all time 14.6% top 10% · 62 works
  8. 8 Zhejiang University China · Hangzhou · #45 all time 12.7% top 10% · 105 works
  9. 9 Sichuan University China · Chengdu · #44 all time 13.0% top 10% · 100 works
  10. 10 Fudan University China · Shanghai · #39 all time 15.3% top 10% · 70 works

The track on each row is that row's top-10% rate. The ranking itself is the quality score, which compares the rate with what each place's own topics predict, adds its share of papers in the Nature Index journals, and counts output and breadth too.

Of 27 institutions above the floor of 40 fractional works in Gastroenterology.

Top 100 Gastroenterology institutions

By volume, 2022-now

  1. 1 Harvard UniversityUnited States 257 works
  2. 2 Mayo ClinicUnited States 222 works
  3. 3 Sun Yat-sen UniversityChina 150 works
  4. 4 Nanjing Medical UniversityChina 128 works
  5. 5 Zhejiang UniversityChina 119 works
  6. 6 Sichuan UniversityChina 116 works
  7. 7 Shanghai Jiao Tong UniversityChina 114 works
  8. 8 All India Institute of Medical SciencesIndia 106 works
  9. 9 Cleveland ClinicUnited States 105 works
  10. 10 University of North Carolina at Chapel HillUnited States 96 works

Who are the leading researchers in Gastroenterology?

Counting only their work in Gastroenterology, Michael Camilleri, Jan F. Tack and Peter J. Kahrilas have the most papers in the world top 10% for their subfield and year beyond the 10% expected.

  1. 1 Michael Camilleri United States · #28,918 worldwide overall 114.4 of 364 papers here in the top 10%
  2. 2 Jan F. Tack Belgium · #145,829 worldwide overall 115.9 of 527 papers here in the top 10%
  3. 3 Peter J. Kahrilas United States · #17,763 worldwide overall 72.1 of 214 papers here in the top 10%
  4. 4 Alexander Charles Ford United Kingdom · #13,435 worldwide overall 68.7 of 183 papers here in the top 10%
  5. 5 John Erik Pandolfino United States · #36,932 worldwide overall 73.1 of 236 papers here in the top 10%
  6. 6 Magnus Simrén Sweden · #59,505 worldwide overall 62.0 of 208 papers here in the top 10%
  7. 7 Nicholas Joseph Talley Australia · #163,597 worldwide overall 69.6 of 299 papers here in the top 10%
  8. 8 Alan R. Zinsmeister United States · #28,715 worldwide overall 55.9 of 173 papers here in the top 10%
  9. 9 Marc Alexander Benninga Netherlands · #74,027 worldwide overall 57.2 of 214 papers here in the top 10%
  10. 10 Paul Moayyedi Canada · #35,223 worldwide overall 48.7 of 155 papers here in the top 10%

Ranked on their work in Gastroenterology alone: how many more of their papers here reached the world top 10% for their subfield and year than the 10% expected, among 581,714 ranked researchers with a paper here. Each paper counts once, so many strong papers outrank one famous one, and a long record of ordinary papers does not climb. Identities come from OpenAlex author disambiguation, which occasionally merges or splits people.

Top 100 Gastroenterology researchers

What are the most cited papers in Gastroenterology?

The most cited paper in Gastroenterology is "Comprehensive molecular characterization of gastric adenocarcinoma" (Adam Joel Bass et al., 2014), with 6,680 citations. Next come "Perioperative Chemotherapy versus Surgery Alone for Resectable Gastroesophageal Cancer" (6,432) and "Diversity, stability and resilience of the human gut microbiota" (5,727).

Most cited papers
#PaperReleasedCitations
1 Comprehensive molecular characterization of gastric adenocarcinoma Adam Joel Bass et al. · Nature Open access258 authors 23 Jul 2014 6,680
2 Perioperative Chemotherapy versus Surgery Alone for Resectable Gastroesophageal Cancer David Cunningham, William Allum, Sally Patricia Stenning et al. · New England Journal of Medicine 6 Jul 2006 6,432
3 Diversity, stability and resilience of the human gut microbiota Catherine Lozupone, Jesse Stombaugh, Jeffrey I. Gordon et al. · Nature Open access Sep 2012 5,727
4 The Microbiota-Gut-Brain Axis John F. Cryan et al. · Physiological Reviews ReviewOpen access 28 Aug 2019 5,217
5 The gut microbiota shapes intestinal immune responses during health and disease June L. Round, Sarkis K. Mazmanian · Nature reviews. Immunology ReviewOpen access 3 Apr 2009 5,124
All 99 most cited papers, with filters and sorting

Where is Gastroenterology research done?

The largest centres of Gastroenterology research in 2022-now are Beijing (China), Tokyo (Japan), London (United Kingdom) and Shanghai (China).

Largest cities, 2022-now

  1. 1 BeijingChina 622 works
  2. 2 TokyoJapan 506 works
  3. 3 LondonUnited Kingdom 401 works
  4. 4 ShanghaiChina 384 works
  5. 5 SeoulSouth Korea 378 works
  6. 6 GuangzhouChina 335 works
  7. 7 New YorkUnited States 295 works
  8. 8 NanjingChina 246 works
  9. 9 HangzhouChina 246 works
  10. 10 MoscowRussia 236 works
See Gastroenterology on the map

Gastroenterology research by country

The best places for Gastroenterology research inside each country, with that country's researchers and world standing.

Where is the best place to study Gastroenterology?

Among universities, judged by research, Harvard University, KU Leuven and Sun Yat-sen University score highest, combining standing in the field's ranking, citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%10%20%mean 14.93%fractional works in this field (log) →share of work in the world top 10% →Harvard UniversityKU LeuvenNorthwestern Univers…Sun Yat-sen University
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Standingthis field's institution ranking, three quarters all time and a quarter 2022-now
50%
Citation excellenceshare of its work in the world top 10%, 2022-now and all time averaged
20%
Specialisationhow much of its work is in this field, counted up to 10× the world share
5%
Sizeits output in this field, on a log scale
15%
Growthoutput growth, counted from -20% to +20%
5%
Internationalshare of its work with a co-author abroad
5%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreRank in field (all time)Top 10%SpecialisationWorksGrowth
1Harvard UniversityUnited States 87.6#1 (#1)16.7%3.2×257 -1.3%
2KU LeuvenBelgium 63.6#14 (#3)16.5%3.0×73 -9.6%
3Sun Yat-sen UniversityChina 58.5#3 (#17)14.4%2.9×150 +48.7%
4Northwestern UniversityUnited States 57.3#7 (#7)15.6%3.3×69 -8.0%
5University of MichiganUnited States 55.7#5 (#9)16.0%2.1×80 -9.3%
6Columbia UniversityUnited States 52.3- (#4)11.8%2.1×59 -13.5%
7University College LondonUnited Kingdom 50.5#12 (#15)13.1%2.1×83 +0.9%
8Stanford UniversityUnited States 50.3- (#6)12.6%1.7×64 -0.8%
9Peking UniversityChina 50.1#4 (#28)15.6%1.7×87 +12.4%
10Chinese University of Hong KongChina 48.2- (#14)17.0%2.4×43 -2.7%

Universities only. The score blends standing (50%), citation excellence (20%), size (15%), specialisation (5%), growth (5%), international reach (5%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise. Standing is the score in this field's institution ranking, three quarters over all time and a quarter 2022-now; excellence averages the two windows too. Four years alone undercount fields such as AI, where many conference and arXiv papers from 2022 on carry no affiliation in the data.

Every institution in Gastroenterology, country by country

Is Gastroenterology research growing?

Output in 2022-2025 was 14% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Gastrointestinal motility and disorders, Gastrointestinal Bleeding Diagnosis and Treatment and Gastroesophageal reflux and treatments.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Gastroenterology as a percentage of every work published that year, 0.12% in 2024.

still counting0.10%0.20%Gastroenterology0.12% in 202519801990200020102020

Fractional works of Gastroenterology over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Gastroenterology10.1% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

  1. Gastrointestinal motility and disorders+27%
  2. Gastrointestinal Bleeding Diagnosis and Treatment+17%
  3. Gastroesophageal reflux and treatments+10%
  4. Celiac Disease Research and Management+8%
  5. Gastrointestinal Tumor Research and Treatment+6%
← shrinkingno changegrowing →

Growth in output from 2018-21 to 2022-25. Every topic is a page of its own.

What does Gastroenterology include?

Gastroesophageal reflux …39kGastroesophageal reflux and treatments: 39k fractional worksGastrointestinal motilit…38kGastrointestinal motility and disorders: 38k fractional worksGastrointestinal Tumor R…32kGastrointestinal Tumor Research and Treatment: 32k fractional worksCeliac Disease Research and Management: 18k fractional worksGastrointestinal Bleeding Diagnosis and Treatment: 18k fractional works

Area is fractional works in that topic. Every name below is a page of its own.

Share who leads Gastroenterology

Who leads Gastroenterology, on Science Explorer

A card with the countries and institutions that lead Gastroenterology, for a post or a slide.

Download the card

1200 × 630 PNG, sized for social posts, drawn from the latest snapshot.

The leading institutions' badges6Each links to that institution's page and updates with every snapshot

Discussion

Ask a question or share a note about Gastroenterology. Keep it to the research: no personal attacks, advertising or links. Any reader can report a post, which collapses it for everyone until it is opened.