Can drinking water also cause cancer? Are there harmful substances in water?

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Our editor has learned that a report issued by the International Agency for Research on Cancer (IARC), which is part of the World Health Organization (WHO), contains a warning stating that drinking hot beverages at temperatures above 65°C poses a risk of causing cancer. Why do hot beverages cause cancer? https://5b0988e595225.cdn.sohucs.com/images/20171130/4ffd248271b2412b9451085ca9da0345.jpeg The mucosa covering the surfaces of the mouth and esophagus is very thin and fragile; it can withstand temperatures ranging from 50°C to 60°C. Temperatures above 65°C can easily cause burns to this mucosa. If hot beverages above 65°C are consumed regularly, it may lead to mouth ulcers or esophageal ulcers, and in severe cases, it can even cause esophageal cancer. The appropriate eating temperature is 10°C to 40°C℃ ； The maximum temperature it can tolerate is only between 50°C and 60°C℃ ； Temperatures above 65°C are sufficient to burn the mucous membranes. Of course, the development of esophageal cancer does not happen overnight; occasional burns allow the esophagus to repair itself. However, over time, as the esophagus undergoes repeated cycles of \"damage-repair-damage-repair,\" an increasing number of abnormal \"atypical\" cells also appear. Therefore, if one consumes hot food and drinks overly hot beverages for a long time, it may not lead to cancer, but problems such as oral ulcers and esophageal ulcers are inevitable. Why is it above 65°C? https://5b0988e595225.cdn.sohucs.com/images/20171130/e45aa84eaf37420cb369c17e6415fee0.jpeg Experiments on rats have also shown that hot drinks at 65°C to 70°C are sufficient to burn the throat and may lead to tumors. Hot drinks above 65°C are listed as Group 2A carcinogens, which are likely to cause cancer in humans. Note that hot drinks above 65°C \"may cause cancer,\" but this does not mean that hot soup, tea, coffee, or water should not be consumed at all; it is not a \"if...then...\" relationship where consuming them will definitely lead to cancer. A risk of causing cancer does not mean it will definitely cause cancer. The focus of this report is to encourage everyone to change some unhealthy habits; no matter how anxious you are, avoid eating hot tofu. How to determine if the water temperature exceeds 65°C https://5b0988e595225.cdn.sohucs.com/images/20171130/e74d9ad266ad4edfa18ff200b9ab3e08.jpeg It’s actually not difficult to figure out whether the water temperature is above 65°C. Boiling water poured into a cup will have its temperature drop to around 65°C after being left at room temperature for about 5 minutes. So don’t rush when drinking hot drinks; let them sit at room temperature for a few minutes, then touch them with your lips – once they don’t feel too hot, you can drink them safely. The reason hot drinks can cause cancer is the temperature, not the drink itself. However, to prevent cancer, in addition to avoiding hot drinks, it is also important to quit smoking and drinking alcohol. After all, tobacco and alcohol are Class 1 carcinogens that are even more harmful than 65°C