Short answer · Medically reviewed summary · Last updated: 2026-05-08
Stomach cancer, also known as gastric cancer, is a common malignancy globally, with approximately 1 million new cases diagnosed annually according to the World Health Organization. While stomach cancer is not considered a rare disease on a global scale, it exhibits significant geographic, ethnic, and age-related variations in its prevalence and incidence rates. What is the global incidence and prevalence of stomach cancer? According to GLOBOCAN data, stomach cancer ranks as the fifth most frequently diagnosed cancer worldwide.
What is the prevalence of Stomach cancer?
Prevalence of Stomach cancer: how many people are affected worldwide, differences by sex and region, with sources.
Stomach cancer, also known as gastric cancer, is a common malignancy globally, with approximately 1 million new cases diagnosed annually according to the World Health Organization. While stomach cancer is not considered a rare disease on a global scale, it exhibits significant geographic, ethnic, and age-related variations in its prevalence and incidence rates.
What is the global incidence and prevalence of stomach cancer?
According to GLOBOCAN data, stomach cancer ranks as the fifth most frequently diagnosed cancer worldwide. The incidence of stomach cancer varies drastically by region, with the highest rates found in Eastern Asia, Eastern Europe, and South America. Because this is a major public health concern, international registries track these numbers closely, though true prevalence can be difficult to quantify due to variations in screening programs and potential underdiagnosis in regions with limited access to endoscopy.
Who is most affected by stomach cancer?
The epidemiology of stomach cancer shows distinct patterns regarding demographics and risk factors:
- Gender: Men are approximately twice as likely to develop stomach cancer as women.
- Age: It is primarily a disease of older adults, with the majority of diagnoses occurring in individuals over the age of 60.
- Ethnicity: Higher incidence rates are observed in specific populations, often correlated with environmental factors such as H. pylori infection prevalence and dietary habits.
Why is accurate data for stomach cancer challenging to obtain?
While stomach cancer is widely recognized, tracking exact prevalence is complicated by the fact that early-stage disease is often asymptomatic and thus underdiagnosed. In our DiseaseMaps.org community, 13 people with stomach cancer have shared their experiences, providing a crucial, real-world perspective that complements large-scale epidemiological statistics by highlighting the patient journey and diagnostic delays.
What are the primary risk factors for stomach cancer?
The development of stomach cancer is often multifactorial, involving both genetic predisposition and environmental triggers. Key factors include chronic Helicobacter pylori infection, tobacco use, high intake of salted or preserved foods, and a family history of gastric malignancies. Understanding these factors is vital for early detection and personalized care strategies.
Next steps
- Consult a gastroenterologist or oncologist if you have persistent digestive symptoms or a family history of stomach cancer.
- Join the DiseaseMaps.org community to connect with other individuals navigating a stomach cancer diagnosis.
- Discuss screening options, such as upper endoscopy, with your physician if you fall into a high-risk category.
Medical disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment; always seek the advice of your physician regarding any medical condition.
References
- World Health Organization (WHO) - GLOBOCAN Database
- National Cancer Institute (NCI) - Gastric Cancer Statistics
- American Cancer Society (ACS) - Key Statistics for Stomach Cancer
- NIH Genetic and Rare Diseases (GARD) Information Center
