Stomach cancer often develops quietly. Many people do not notice symptoms until the disease reaches an advanced stage. Doctors say this is one of the biggest reasons why stomach cancer remains difficult to detect early in many parts of the world.
Harvard-trained gastroenterologist Dr Saurabh Sethi recently shared an important warning on Instagram about the hidden risks linked to stomach cancer. According to him, one major cause is an infection that millions of people may already have without knowing it — H. pylori.
The doctor explained that nearly 44% of the global population is infected with H. pylori, a bacteria strongly linked to this deadly disease. Despite being common, many people never get tested for it.
Stomach Cancer Risk Factors Most People Ignore
Dr Sethi highlighted that it is currently the fifth most common cancer worldwide. However, the disease often stays silent in its early stages, making timely diagnosis difficult.
He also pointed out several lifestyle habits that may increase the risk of stomach cancer.
One major factor is a high-salt diet. According to studies, consuming excess salt may increase stomach cancer risk by up to 41%. Processed and ultra-processed meats may also play a role. Dr Sethi noted that high intake of these foods could raise the risk by up to 57%.
Smoking is another major concern. Many people do not realise that smoking significantly raises the risk of stomach cancer along with several other digestive diseases.
The doctor also stressed the importance of family history. People with a first-degree relative diagnosed with stomach cancer may have a 1.5 to 3.5 times higher risk themselves.
Why Early Screening Matters
One of the most alarming points shared by Dr Sethi was the difference in early detection rates across countries.
In the United States, only around 30% of cases are detected early. In comparison, countries like Japan and Korea detect nearly 60–70% of cases in earlier stages because of regular screening programs.
Early detection can significantly improve treatment outcomes and survival rates. Doctors say people who experience long-term acidity, unexplained weight loss, stomach pain, bloating, nausea or difficulty eating should not ignore these symptoms.
Testing for H. pylori may also help in identifying hidden risks early, especially for people with a family history of stomach cancer or ongoing digestive issues.
Health experts advise focusing on healthier eating habits, reducing processed foods, quitting smoking and seeking medical advice if digestive symptoms continue for a long time. While it can be serious, doctors say awareness and early screening may help save lives.
