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Subfield · Medicine

Gastroenterology research

Gastroenterology is a subfield of Medicine. Science Explorer counts 146k research works in it since 1950. 16.3% 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%
24k
per year above
Top-10% rate
16.3%
share of its works in the world top 10%
Topics
5
Growth, 2013–17 → 2018–22
+18%
the tick is no change

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 2019–23, its most used keywords are Intestinal Permeability, Gastrointestinal Disorders, Irritable Bowel Syndrome, Imatinib Mesylate, Sunitinib, Esophageal Motility Disorders.

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

Size is the world's fractional works in 2019–23 in the topics tagged with each word; colour compares the word's share of this field with 2009–13. Each links to the topic it comes from most.

All 11 words, with their numbers
  1. Intestinal Permeability11k◆ 1.06×2 topics
  2. Gastrointestinal Disorders7,749◆ 1.08×1 topic
  3. Irritable Bowel Syndrome7,749◆ 1.08×1 topic
  4. Imatinib Mesylate7,336◆ 0.97×1 topic
  5. Sunitinib7,336◆ 0.97×1 topic
  6. Esophageal Motility Disorders7,104◆ 0.99×1 topic
  7. Gastroesophageal Reflux Disease7,104◆ 0.99×1 topic
  8. Capsule Endoscopy3,875◆ 0.93×1 topic
  9. Upper Gastrointestinal Bleeding3,875◆ 0.93×1 topic
  10. Celiac Disease3,558◆ 1.01×1 topic
  11. Gluten Sensitivity3,558◆ 1.01×1 topic

Which countries lead Gastroenterology research?

On research quality in 2022–2025, the United States, China and the United Kingdom rank highest in Gastroenterology. By volume, the United States and China publish the most (5.2k and 4.2k works in 2022–2025).

By research quality, 2022–2025

  1. 1 United States · #1 all time 14.7% top 10% · 5.2k works
  2. 2 China · #3 all time 20.7% top 10% · 4.2k works
  3. 3 United Kingdom · #2 all time 17.1% top 10% · 1.1k works
  4. 4 Italy · #4 all time 25.1% top 10% · 990 works
  5. 5 Japan · #6 all time 9.3% top 10% · 1.8k works
  6. 6 France · #9 all time 17.0% top 10% · 509 works
  7. 7 Australia · #7 all time 23.6% top 10% · 441 works
  8. 8 Germany · #5 all time 13.1% top 10% · 758 works
  9. 9 South Korea · #14 all time 17.7% top 10% · 719 works
  10. 10 Canada · #8 all time 18.9% top 10% · 447 works

The track on each row is that row’s top-10% rate. The ranking itself is the composite score, which the rate is only one part of.

Of 23 countries ranked in Gastroenterology. Composite of field-normalised excellence (50%), output (30%) and citations (20%); the bracket is the all-time rank.

All countries ranked in Gastroenterology

By volume, 2022–2025

  1. 1 United States 5.2k works
  2. 2 China 4.2k works
  3. 3 Japan 1.8k works
  4. 4 India 1.2k works
  5. 5 United Kingdom 1.1k works
  6. 6 Italy 990 works
  7. 7 Germany 758 works
  8. 8 South Korea 719 works
  9. 9 Spain 636 works
  10. 10 Türkiye 567 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: 30.4%China: 24.5%Japan: 10.4%India: 6.8%6 others listed: 27.8%30%largest
United States5,213 · 30.4%China4,202 · 24.5%Japan1,780 · 10.4%India1,174 · 6.8%6 others listed4,769 · 27.8%

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 2022–2025, followed by Chinese Academy of Medical Sciences & Peking Union Medical College and Mayo Clinic in Arizona.

By research quality, 2022–2025

  1. 1 Harvard University United States · Cambridge · #3 all time 29.9% top 10% · 68 works
  2. 2 Chinese Academy of Medical Sciences & Peking Union Medical College China · Beijing · #81 all time 22.9% top 10% · 68 works
  3. 3 Mayo Clinic in Arizona United States · Scottsdale · #4 all time 18.2% top 10% · 72 works
  4. 4 University of North Carolina at Chapel Hill United States · Chapel Hill · #7 all time 17.7% top 10% · 67 works
  5. 5 Cleveland Clinic United States · Cleveland · #12 all time 13.0% top 10% · 82 works
  6. 6 Sun Yat-sen University China · Guangzhou 19.3% top 10% · 63 works

The track on each row is that row’s top-10% rate. The ranking itself is the composite score, which the rate is only one part of.

Of 6 institutions above the floor of 40 fractional works in Gastroenterology.

Top 100 Gastroenterology institutions

By volume, 2022–2025

  1. 1 Cleveland Clinic United States 82 works
  2. 2 Mayo Clinic in Arizona United States 72 works
  3. 3 Harvard University United States 68 works
  4. 4 Chinese Academy of Medical Sciences & Peking Union Medical College China 68 works
  5. 5 University of North Carolina at Chapel Hill United States 67 works
  6. 6 Sun Yat-sen University China 63 works
  7. 7 Mayo Clinic United States 58 works
  8. 8 All India Institute of Medical Sciences India 57 works
  9. 9 KU Leuven Belgium 55 works
  10. 10 Nanjing Medical University China 55 works

Who are the leading researchers in Gastroenterology?

Among the most productive authors in Gastroenterology, Reza Malekzadeh, Mark J. Daly and Matthew Meyerson rank highest on the composite score.

  1. 1 Reza Malekzadeh Iran · #24 worldwide 6.7k citations · 167 works
  2. 2 Mark J. Daly United States · #47 worldwide 9.6k citations · 152 works
  3. 3 Matthew Meyerson United States · #149 worldwide 4.2k citations · 138 works
  4. 4 Ramnik J. Xavier United States · #345 worldwide 3k citations · 118 works
  5. 5 John L. Cameron United States · #658 worldwide 1.7k citations · 121 works
  6. 6 Timothy G. Dinan Ireland · #742 worldwide 3.1k citations · 126 works
  7. 7 James D. Luketich United States · #912 worldwide 1.8k citations · 137 works
  8. 8 Marc Ladanyi United States · #1,265 worldwide 3.1k citations · 252 works
  9. 9 Samuel Singer United States · #1,284 worldwide 2k citations · 100 works
  10. 10 Caroline Robert France · #1,339 worldwide 3.3k citations · 242 works

Re-ranked on the composite score from the 4,963 highest-output authors in Gastroenterology. Identities come from OpenAlex author disambiguation, which occasionally merges or splits people.

Top 100 Gastroenterology researchers

Where is Gastroenterology research done?

The largest centres of Gastroenterology research in 2022–2025 are Beijing (China), Tokyo (Japan), London (United Kingdom) and Seoul (South Korea).

Largest cities, 2022–2025

  1. 1 Beijing China 530 works
  2. 2 Tokyo Japan 442 works
  3. 3 London United Kingdom 339 works
  4. 4 Seoul South Korea 332 works
  5. 5 Shanghai China 330 works
  6. 6 Guangzhou China 285 works
  7. 7 New York United States 260 works
  8. 8 Moscow Russia 213 works
  9. 9 Nanjing China 208 works
  10. 10 Boston United States 205 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, Hunan University of Traditional Chinese Medicine, SHOWA Medical University and Zhejiang Chinese Medical University score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%60%mean 23.71%fractional works in this node (log) →share in the world top 10% →Hunan University of Traditional Chinese Medicine: 17, 47.8%SHOWA Medical University: 16, 15.7%Zhejiang Chinese Medical University: 38, 22.8%Chengdu University of Traditional Chinese Medicine: 37, 37.5%Sechenov University: 44, 4.9%Carol Davila University of Medicine and Pharmacy: 20, 25.0%Humanitas University: 14, 20.8%Harvard University: 68, 29.9%Iuliu Hațieganu University of Medicine and Pharmacy: 18, 23.5%Jichi Medical University: 23, 9.2%Hunan University of …Chengdu University o…Zhejiang Chinese Med…SHOWA Medical Univer…
above the meannear itbelow it

One dot per university in the table below. The upper left is the interesting corner: small places doing unusually strong work.

#UniversityScoreTop 10%SpecialisationWorksGrowth
1Hunan University of Traditional Chinese Medicine China 54.447.8%9.4×17 —
2SHOWA Medical University Japan 51.515.7%10.5×16 +197.4%
3Zhejiang Chinese Medical University China 50.722.8%6.3×38 +159.2%
4Chengdu University of Traditional Chinese Medicine China 48.837.5%7.0×37 +0.6%
5Sechenov University Russia 47.54.9%5.8×44 +694.4%
6Carol Davila University of Medicine and Pharmacy Romania 46.225.0%5.3×20 +229.9%
7Humanitas University Italy 45.320.8%7.6×14 +131.9%
8Harvard University United States 45.229.9%2.2×68 +37.1%
9Iuliu Hațieganu University of Medicine and Pharmacy Romania 44.723.5%8.0×18 +81.6%
10Jichi Medical University Japan 43.79.2%11.0×23 +62.0%

Universities only. Score blends excellence (30%), specialisation (25%), size (20%), growth (15%) and international reach (10%), 2015–2022; growth compares 2010–14 with 2015–19.

Is Gastroenterology research growing?

Output in 2018–2022 was 18% higher than in 2013–2017, peaking in 2025. The fastest-growing topics are Gastrointestinal Tumor Research and Treatment, Celiac Disease Research and Management and Gastrointestinal Bleeding Diagnosis and Treatment.

19801990200020102020
grewheldshrank

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

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 Tumor Research and Treatment+73%
  2. Celiac Disease Research and Management+67%
  3. Gastrointestinal Bleeding Diagnosis and Treatment+60%
  4. Gastrointestinal motility and disorders+48%
  5. Gastroesophageal reflux and treatments+33%
← shrinkingno changegrowing →

Growth in output from 2005–09 to 2015–19. 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.