18 Mar 2026, Wed

Every 12 minutes someone in Britain is diagnosed with bowel cancer (colorectal cancer) and every year around 17,000 people lose their lives due to this disease. This cancer is the second most common cause of cancer deaths in Britain. Usually people recognize its symptoms by signs like stomach ache, change in stool habits or diarrhea and constipation, but new research shows that changes in the mouth can also be an early warning of this serious disease.

Relationship between oral bacteria and gut bacteria

Common teeth and gum problems may indicate an imbalance of bacteria in the mouth. Harmful bacteria present in the mouth can reach the intestine and cause inflammation there, which in some cases can help in the development of cancer. Certain habits, such as not brushing and flossing teeth properly, smoking, excessive alcohol consumption, and a diet high in sugar and low in fiber, can upset this delicate bacterial balance.

Also read – High Cholesterol In Young Age: Now there is a risk of cholesterol from a young age, if you want to avoid heart attack… 11 medical institutes have issued guidelines.

Signs of intestinal cancer visible in the mouth

1. Bleeding from gums – Bleeding gums is a common symptom that indicates gum disease. This is a sign of inflammation and infection, due to which harmful bacteria can enter the bloodstream and reach the digestive system. According to Harvard research, the risk of precancerous colon polyps is 17 to 21 percent higher in people with gum disease. Additionally, swollen or tender gums without visible bleeding may indicate early gingival inflammation. This condition often remains symptomless and can be ignored for years.

2. Bad breath – Persistent bad breath can also be a warning. This may be linked to a bacteria called Fusobacterium nucleatum, which has been found in gum disease as well as bowel cancer tumors. This bacteria can travel to other parts of the body through saliva or blood cells and contribute to the development of cancer by evading immunity.

3. White or yellow layer on the tongue – The white or yellow layer on the tongue is formed due to accumulation of bacteria, dirt or dead cells. It may also be a sign of poor oral hygiene, dehydration or dry mouth. Research suggests that some layers may reflect changes in oral bacteria, which may be linked to bowel cancer.

4. Losing four or more teeth – According to Harvard and the AACR, people who have lost four or more teeth have a 20 percent higher risk of precancerous colon polyps. This may be the result of long-term untreated gum disease.

Also read – Side Effects Of Birth Control Pills: Do pregnancy prevention medicines cause cancer, know how true is this?

Disclaimer: This information is based on research studies and expert opinion. Do not consider this as a substitute for medical advice. Before adopting any new activity or exercise, please consult your doctor or relevant specialist.

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