While the exact causes of stomach cancer remain complex, researchers have made significant progress in identifying key risk factors—and your blood type might be one of them.
Doctors identify the blood type most at risk for developing stomach cancer
🔬 The Role of Infection & Lifestyle
One of the most significant contributors is a bacterium called Helicobacter pylori (H. pylori).
According to Cancer Research UK, H. pylori is responsible for about 40% of stomach cancer cases. It’s typically transmitted through contaminated food or water and can lead to inflammation or ulcers, both of which raise cancer risk.
Other known risk factors include:
- Aging
- Smoking
- Obesity
- Untreated infections
⚠️ Symptoms to Watch For
The NHS warns that early signs of stomach cancer are often subtle.
Common symptoms include:
- Persistent indigestion or heartburn
- Frequent burping or bloating
- Feeling overly full after small meals
As the disease progresses, symptoms may become more serious:
- Blood in stool
- Unexplained weight loss
- Ongoing fatigue
- Loss of appetite
🧬 Blood Type & Cancer Risk: What the Research Shows
A large study of 50,000 participants in Iran revealed that individuals with blood types A, B, or AB were 55% more likely to develop stomach cancer compared to those with blood type O.
Additional findings include:
- Type AB is linked to a 45% higher risk of liver cancer
- People with blood types O and AB appear to have a lower risk of pancreatic cancer
While the biological reasons are still being studied, this research suggests blood type may influence how our immune systems interact with infections or inflammation, potentially shaping cancer risks over time.
🧠 Takeaway
Knowing your blood type could one day help guide early screenings or prevention strategies, especially for high-risk individuals.
If you experience persistent digestive symptoms or have other risk factors, don’t delay speaking to your doctor.
Early detection saves lives.
