Also called: Gastric disorders
Important: This page is general information, not medical advice. It does not recommend or prescribe any treatment. Always consult your doctor or pharmacist before starting, stopping or changing any medicine.
About Stomach Disorders
Your stomach is an organ between your esophagus and small intestine. It is where digestion of protein begins. The stomach has three tasks. It stores swallowed food. It mixes the food with stomach acids. Then it sends the mixture on to the small intestine.
Most people have a problem with their stomach at one time or another. Indigestion and heartburn are common problems. You can relieve some stomach problems with over-the-counter medicines and lifestyle changes, such as avoiding fatty foods or eating more slowly. Other problems like peptic ulcers or GERD require medical attention.
You should see a doctor if you have any of the following:
- Blood when you have a bowel movement
- Severe abdominal pain
- Heartburn not relieved by antacids
- Unintended weight loss
- Ongoing vomiting or diarrhea
It sits within Digestive System.
The lead U.S. institute for this subject is the National Institute of Diabetes and Digestive and Kidney Diseases.
When to speak to someone. Reading about a topic cannot tell you whether it applies to you. Speak to a doctor or pharmacist if symptoms are severe, sudden, getting worse, or simply not going away — and seek emergency care immediately for chest pain, breathing difficulty, sudden weakness or confusion, or a serious allergic reaction.
Research on Stomach Disorders
6,064 studies areregistered for this condition on ClinicalTrials.gov, the U.S. National Library of Medicine's public registry. A selection is below — the links go straight to the registry entry, not to a summary of ours.
What a registered study does and does not mean. Registration means a study exists and has been declared publicly. It says nothing about whether the treatment being tested works, is safe, or is available to you. Many studies find no benefit — that is what research is for. Never seek out an experimental treatment on the strength of a registry entry alone.
Research currently under way
- Targeted Therapy Directed by Genetic Testing in Treating Patients With Advanced Refractory Solid Tumors, Lymphomas, or Multiple Myeloma (The MATCH Screening Trial)National Cancer Institute (NCI)
- Study of AU-007, A Monoclonal Antibody That Binds to IL-2 and Inhibits IL-2Rα Binding, in Patients With Unresectable Locally Advanced or Metastatic CancerAulos Bioscience, Inc.
- Study of AB598 Monotherapy and Combination Therapy in Participants With Advanced CancersArcus Biosciences, Inc.
- Study of Anti-CEACAM5 ADC M9140 in Participants With Advanced Solid Tumors (PROCEADE PanTumor)EMD Serono Research & Development Institute, Inc.
- Symbiotic-GI-16: A Study to Learn About the Study Medicine Called PF-08634404 in Combination With Chemotherapy in Gastroesophageal CancerPfizer
- A Study of Bispecific Antibody MCLA-158 in Patients With Advanced Solid TumorsMerus B.V.
Research already completed
- Study of Oxaliplatin and Xeloda and Cetuximab as First Line Treatment for Metastatic or Unresectable Gastric or Gastroesophageal Junction CancerUniversity of Southern California
- Esophageal Cancer Genetics StudiesNational Cancer Institute (NCI)
- Development of a Multimodal AI System for GIST ManagementQun Zhao
Study data from ClinicalTrials.gov, a service of the U.S. National Library of Medicine. Retrieved 2026-07-30. Registry entries are supplied by study sponsors and investigators; ClinicalTrials.gov does not verify their scientific validity. PocketsInfo is not affiliated with, and not endorsed by, the NLM or the NIH.
Where to read more
Rather than paraphrase, we point you to the primary sources. Every link below is to a government health agency, a national institute or a recognised medical body — grouped by what you are trying to find out.
Start Here
- StomachMerck & Co., Inc.
Diagnosis and Tests
- Barium SwallowNational Library of Medicine
- Gastric Emptying TestsNational Library of Medicine
- Upper GI EndoscopyNational Institute of Diabetes and Digestive and Kidney Diseases
- Upper GI SeriesNational Institute of Diabetes and Digestive and Kidney Diseases
Treatments and Therapies
- Gastrectomy - seriesMedical Encyclopedia
Related Issues
- Gut Troubles: Pain, Gassiness, Bloating, and MoreNational Institutes of Health
Clinical Trials
- ClinicalTrials.gov: GastroparesisNational Institutes of Health
- ClinicalTrials.gov: Stomach DiseasesNational Institutes of Health
Medical subject headings
Clinicians and researchers index this subject under Stomach Diseases. These are the terms to use when searching medical literature.
This page is built from the MedlinePlus health topic record for Stomach Disorders, a service of the U.S. National Library of Medicine (NLM), National Institutes of Health. Information is from MedlinePlus.gov. PocketsInfo is not affiliated with, and is not endorsed by, the NLM or the NIH. Retrieved 30 July 2026.