Stomach Cancer 101: What It Is, Who Is at Risk, and Why Early Detection Matters
Stomach cancer, also called gastric cancer, may not be discussed as often as some other cancers, but it remains a serious disease. One of the biggest challenges is that it is often found at a later stage, when fewer treatment options are available.
What is stomach cancer?
Stomach cancer begins when abnormal cells grow in the lining of the stomach. Most cases start in the inner lining and are called adenocarcinomas.
One reason stomach cancer can be difficult to detect early is that symptoms may be mild at first. Early signs can include indigestion, stomach discomfort, bloating after eating, mild nausea, loss of appetite, or heartburn.
Other symptoms may include unexplained weight loss, vomiting, blood in the stool, stomach pain, jaundice, or trouble swallowing. These symptoms do not always mean stomach cancer, but they should not be ignored, especially if they continue or get worse.
Who is at risk for stomach cancer?
Anyone can develop stomach cancer, but some people may have a higher risk. It is more common in older adults, and the average age at diagnosis is 68. It is also more common in men than in women.
Several factors can increase risk. One of the most important is a long-term infection with H. pylori, a type of bacteria that can damage the stomach lining over time. Other risk factors include smoking, obesity, family history, certain stomach conditions, and diets high in smoked or salted foods and low in fruits and vegetables.
In the United States, stomach cancer is also more common in some groups, including Black, Latino, Asian or Pacific Islander, and American Indian or Alaska Native people.
Why early detection matters
Like many cancers, stomach cancer is often easier to treat when it is found early. But there is no standard routine screening test for stomach cancer for people at average risk in the United States. As a result, many people are not evaluated until symptoms appear or a doctor has reason to investigate further.
Doctors may use lab tests, imaging, and upper endoscopy with biopsy to help diagnose stomach cancer. These tools are important, but they are typically used after symptoms or other concerns are already present.
That is why early detection matters so much. The earlier stomach cancer is detected, the sooner people may be able to get answers and move forward with care.
Why better early detection tools matter
Because stomach cancer can be hard to recognize early, there is a need for better tools that may help detect it sooner.
At Cizzle Bio, we are working to help address that need through DEX-G2, our biomarker blood test designed to help detect stomach cancer earlier. Published validation from the JAMA Surgery study shows that DEX-G2 is a minimally invasive and highly accurate tool for early gastric cancer detection, including 95% sensitivity for early-stage disease.
As cancer care continues to move toward earlier detection, biomarker blood tests can help give patients and clinicians another way to find answers sooner. For patients, that can mean earlier answers. For clinicians, it can provide another evidence-based tool to support care decisions.
The bottom line
Stomach cancer can be hard to catch early because symptoms may be easy to miss, and routine screening is not standard for average-risk adults in the United States. That is why it is important to understand the risk factors, pay attention to persistent symptoms, and speak with a healthcare provider if something does not feel right.
Early detection saves lives, and finding stomach cancer earlier can give you more options, more clarity, and a better chance of starting treatment when it can be most effective.
Stomach cancer can be difficult to catch early because symptoms are often mild at first and routine screening is not standard for average-risk adults in the United States. This article explains what stomach cancer is, who may be at higher risk, symptoms to watch for, and why early detection matters.