Some countries with higher rates have organized screening programs for certain age groups. In other healthcare systems, testing is usually recommended based on symptoms and individual risk.
People with a strong family history, known inherited risk, or certain stomach conditions may need a more individualized plan.
The important point is not to rely on internet symptom lists to diagnose yourself. A healthcare professional can determine whether your symptoms require testing and which investigation is appropriate.
Chapter 5: How to Drink Water Safely and Protect Your Digestive Health
Water is essential for the body. It helps regulate temperature, transport nutrients, support digestion, maintain circulation, and remove waste products through urine and other normal processes.
The fear created by the viral image should not discourage people from drinking water. Instead, it is an opportunity to understand two separate issues: drinking water that is too hot and drinking water that is contaminated.
Both deserve attention, but they involve different health risks.
1. Allow freshly boiled water to cool
If you boil water in a kettle or saucepan, do not drink it immediately while it is still bubbling or steaming intensely.
Pour it carefully into a suitable cup and allow it to cool. Avoid testing the temperature by taking a large sip.
A drink should feel comfortable in the mouth and throat. If it causes burning or pain, it is too hot.
There is no need to make every drink cold. Warm water is perfectly reasonable for people who enjoy it. The important thing is to avoid repeatedly swallowing beverages at scalding temperatures.
Remember that the IARC warning concerns very hot beverages above 65°C and their association with esophageal cancer. It does not establish that ordinary warm water causes stomach cancer.
2. Make sure the water source is safe
Boiling water is an effective way to kill many disease-causing microorganisms.
According to the US Centers for Disease Control and Prevention, during an emergency when safe bottled water is unavailable, clear water can be brought to a rolling boil for one minute to kill germs. At elevations above 6,500 feet, the recommendation is three minutes.
The water should then be allowed to cool and stored in clean, sanitized containers with tight-fitting lids.
However, boiling does not remove every possible contaminant.
Water containing fuel, toxic chemicals, or radioactive substances cannot be made safe simply by boiling it. In such circumstances, people should use an alternative safe source and follow local public health instructions.
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3. Store drinking water correctly
After boiling, use clean containers that have been washed and properly sanitized.
Keep them covered to reduce the risk of contamination from dust, insects, hands, or other sources.
Avoid repeatedly dipping an unclean cup or utensil into a container of stored water. If possible, pour the water directly into a clean drinking glass.
Do not assume that water remains safe indefinitely simply because it was boiled once. Storage conditions and the cleanliness of the container still matter.
4. Maintain a balanced diet
Protecting digestive health involves more than drinking water at the right temperature.
A balanced diet can include:
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Fresh vegetables and fruits.
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Whole grains and fiber-rich foods.
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Appropriate portions of fish, eggs, beans, and other protein sources.
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Less heavily salted and preserved food.
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Fewer highly processed foods.
Reducing excessive salt intake and avoiding smoking are also sensible steps for lowering certain cancer risks.
People who have been diagnosed with H. pylori should follow medical advice about testing and treatment. Do not try to eliminate the infection through drinking water, herbal remedies, or dietary changes alone.
5. Do not ignore persistent digestive symptoms
If you regularly experience indigestion, upper abdominal pain, difficulty swallowing, unexplained weight loss, or repeated vomiting, arrange a medical assessment.
Most people with these symptoms will not have cancer. Nevertheless, identifying the cause can help ensure that ulcers, infections, reflux, and other conditions receive appropriate treatment.
People with a strong family history of stomach cancer should also discuss their individual risk with a healthcare professional.
The Final Message: Boiled Water Is Not Poison—But Extremely Hot Drinks Deserve Caution
The viral image uses a frightening hospital photograph and claims that a 20-year-old woman developed stomach cancer because she drank water in a dangerous way.
However, the photograph does not establish her diagnosis or explain what happened. There is no verified evidence that properly boiled and cooled water causes stomach cancer.
There is a genuine medical concern behind part of the warning: repeatedly drinking beverages at temperatures above 65°C is considered probably carcinogenic to humans, based on evidence linking very hot drinks to esophageal cancer.
That is not the same as saying that all warm water is dangerous or that boiling water itself causes stomach cancer.