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Bibliometric analysis of functional dyspepsia research identifies top authors, institutions, and journals over two decadesWhy Overlapping Stomach Issues Are Getting More Attention

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Key Takeaway
Note this bibliometric analysis describes publication trends and does not provide clinical evidence for functional dyspepsia management.

This systematic review employed a bibliometric and visualization analysis to examine research on functional dyspepsia and overlapping functional gastrointestinal disorders published between 2005 and 2025. The analysis retrieved 3,030 records from the Web of Science Core Collection database. No specific patient population or clinical intervention was evaluated, as the study focused on publication metrics rather than clinical outcomes.

The most prolific author was Nicholas J. Talley with 188 publications, followed by Jan Tack with 95 publications. The top three contributing institutions were Mayo Clinic in the USA (170 publications), KU Leuven in Belgium (123 publications), and the University of Newcastle in Australia (120 publications). The USA contributed the largest number of publications overall, totaling 820 records.

Regarding publication venues, the top three journals were Neurogastroenterology and Motility (209 publications), Alimentary Pharmacology & Therapeutics (106 publications), and the American Journal of Gastroenterology (96 publications). Multi-database validation demonstrated high consistency in annual publication trends, substantial overlap among high-frequency keywords, and stable geographic and disease-focused research emphases.

This analysis describes research trends and does not provide evidence on disease mechanisms, interventions, or patient outcomes. Safety data, adverse events, and clinical tolerability were not reported. Clinicians should interpret these findings as descriptive metrics of scientific productivity rather than clinical evidence for patient management.

The Hidden Link in Your Gut

Imagine you have a headache. Now imagine you also have a bad backache. You might think they are two separate problems. But what if they are actually connected?

That is exactly what happens for many people with functional dyspepsia. This condition causes feelings of fullness, bloating, or pain in the upper stomach.

But here is the frustrating part. Many patients do not just have one issue. They often suffer from irritable bowel syndrome or chronic constipation too.

Doctors used to treat each symptom as a different puzzle piece. They would fix the stomach and ignore the bowel, or vice versa. Patients felt unheard because their whole picture was being ignored.

Functional dyspepsia affects millions of people worldwide. It is a leading cause of visits to gastroenterologists.

The problem is that current treatments often fail. Medicines might help the stomach, but they do nothing for the lower gut. Or they help the bowel but leave the stomach upset.

Patients end up taking many different pills. They feel better for a week, then worse again. This cycle is exhausting for families and costly for healthcare systems.

We need a new way to think about these conditions. We need to see them as one big picture, not separate problems.

The Surprising Shift in Research

For a long time, scientists studied these gut disorders in isolation. They looked at the stomach alone. Then they looked at the colon alone.

But here is the twist. Recent data shows these areas talk to each other constantly. Nerves and hormones connect the upper and lower gut.

This study looked at the last twenty years of science. It used special computer tools to map every major paper ever written on this topic.

The result was clear. The world is finally changing. Researchers are now focusing on how these conditions overlap. They are asking why one problem triggers another.

How It Works: The Body's Communication Network

Think of your digestive system like a busy city. The stomach is the downtown area. The intestines are the suburbs.

In the past, scientists only studied downtown. They ignored the suburbs. They thought traffic jams in one area did not affect the other.

But the city is connected. A flood in the suburbs can cause a backup in downtown. Similarly, a signal from the lower gut can upset the upper stomach.

This study found that the most active researchers are now studying these connections. They are looking for the "wires" that link the two areas.

Researchers searched three huge medical databases for articles published between 2005 and 2025.

They found over 3,000 records. They used special software to analyze who wrote the papers and where they came from.

The United States led the way in publishing these studies. However, top researchers are also coming from Belgium and Australia.

The most common topics included how nerves work in the gut and how the brain affects digestion.

The biggest discovery is the sheer volume of new work. The number of papers has grown steadily over the last two decades.

A few scientists stand out. One researcher from the Mayo Clinic has published more papers than anyone else. Another expert from Belgium is also very active.

These experts are leading the charge to understand overlapping symptoms. They are proving that these conditions are linked.

The study also checked if different databases gave the same results. They did. This means the data is reliable and consistent.

But There Is A Catch

This doesn't mean this treatment is available yet.

It is important to understand what this study actually says. It is a map of research, not a new medicine.

The study tells us where scientists are looking. It does not tell us that a new pill is ready for your pharmacy shelf.

The findings are about knowledge, not immediate cures. We are learning the rules of the game, but we have not found the winning move yet.

If you struggle with stomach pain and bowel issues, this news is hopeful. It means doctors are finally listening to your full story.

You do not need to wait for a new drug to talk to your doctor. Tell them about all your symptoms.

Mention the bloating, the pain, and the changes in your bowel habits. Your doctor can look for these patterns now.

This research helps doctors prescribe better combinations of treatments. It helps them understand why one drug did not work alone.

What happens next? More studies will follow this map. Scientists will use this data to design new clinical trials.

They will test drugs that target both the upper and lower gut at the same time. It will take time for these trials to finish.

Regulatory agencies will need to review the results before approving any new treatments. This process ensures safety for patients.

We are moving in the right direction. The focus is shifting from treating parts to treating the whole person.

This change in thinking brings us closer to real solutions. It brings hope to millions of patients who have felt alone in their struggle.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedApr 2026
View Original Abstract ↓
Functional dyspepsia (FD) overlapping with other functional gastrointestinal disorders (FGIDs) has been a prominent topic in gastroenterology. Knowledge in this area has evolved rapidly over the past two decades. Using bibliometric approaches, this study aimed to evaluate the research landscape on FD overlapping other FGIDs over the last 20 years and to identify major themes and emerging topics. To apply network-based bibliometric methods to comprehensive summarize research progress and trends on FD overlapping other FGIDs, thereby providing evidence and guidance for further studies. On October 1, 2025, we searched the Web of Science Core Collection (WoSCC) for publications from 2005 to 2025 related to FD overlapping other FGIDs. Records were imported into VOSviewer, CiteSpace, and the bibliometrix R package to extract metadata and conduct bibliometric analyses, including annual output, countries/regions, authors, institutions, journals, citation counts, and keywords. To ensure robustness and generalizability, equivalent searches were conducted in Scopus and PubMed using the same keyword set, time span, and eligibility criteria. Cross-database validation assessed concordance in temporal trends, thematic foci, and country rankings. A total of 3,030 WoSCC records were retrieved. Nicholas J. Talley ranked first by number of publications (n = 188), followed by Jan Tack (n = 95). The top three institutions were Mayo Clinic, USA (n = 170), KU Leuven, Belgium (n = 123), and the University of Newcastle, Australia (n = 120). The USA contributed the largest number of publications (n = 820). The three most productive journals were Neurogastroenterology and Motility (n = 209), Alimentary Pharmacology & Therapeutics (n = 106), and American Journal of Gastroenterology (n = 96). Importantly, multi-database validation demonstrated high consistency in annual publication trends, substantial overlap among high-frequency keywords, and stable geographic and disease-focused research emphases. This study comprehensive maps the evolution of research on FD overlapping other FGIDs over the past two decades, providing researchers with an updated overview and fresh insights. Our findings facilitate a comprehensive review of the field and offer a reference to inform future investigations.
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