Very Hot Drinks Flagged As Carcinogenic

A major United Kingdom study says the danger is not tea or coffee itself, but drinking them very hot, which is tied to a higher risk of esophageal cancer.

Story Snapshot

International cancer experts say very hot beverages are probably carcinogenic to humans, based on human and animal studies.
A large United Kingdom cohort linked “very hot” drink habits to higher risk of esophageal squamous cell carcinoma, regardless of tea or coffee type.
The likely risk driver is beverage temperature above about 65 degrees Celsius, not the drink itself.
Some medical voices urge caution, noting the evidence shows association, not certain causation, especially without direct temperature measures.

What The New Study And Reviews Actually Found

Researchers tracking United Kingdom adults found people who liked their tea or coffee “hot” or “very hot” had more cases of esophageal squamous cell carcinoma than those who drank warm or did not drink hot beverages. The risk rose as daily cups increased, and it did not depend on whether the drink was tea or coffee. The World Health Organization’s International Agency for Research on Cancer said in 2016 that very hot beverages are “probably carcinogenic,” based on studies in humans and animals.

The International Agency for Research on Cancer explained that temperature appears to be the key exposure. The agency pointed to a threshold of about 65 degrees Celsius, above which drinks count as very hot. The group stressed that heat, not the beverage, links to harm. Their summary adds that the classification is probabilistic. It does not state how many cups cause cancer, only that very hot drinks likely raise risk of esophageal cancer, especially the squamous type.

Why Temperature, Not Tea Or Coffee, Drives Risk

Scientists point to thermal injury as the likely pathway. Repeated scalding can inflame and damage the lining of the esophagus. Over time, that damage may make cells more likely to turn cancerous. Evidence from East and Southern Africa found almost double the risk for people who chose “very hot” tea or coffee when compared with “hot” drinkers, matching the temperature-based concern, not a coffee or tea chemical issue. This helps explain why drink type mattered less than how hot it was.

The United Kingdom cohort adds weight because it followed many people forward in time, then linked habits to cancer registry outcomes. It reported a stronger link for the squamous cell type and no clear link for adenocarcinoma, which is a different disease with different causes. That split matters. It keeps the claim precise and avoids overreach. It also fits older work that tied very hot drinks to squamous cancers in high-temperature drinking cultures.

Limits, Confusion, And Practical Takeaways

The United Kingdom study did not measure cup temperatures with a thermometer. It used self-reported “hot” versus “very hot” categories. That leaves some uncertainty on the exact heat dose people got. Some cancer centers also warn that current data show association, not proof of causation on their own, and that smoking and alcohol remain major risks that can interact with heat exposure. These cautions argue for clear language and better future measurement, not for ignoring the heat signal.

🔴 Study links very hot drinks to triple risk of oesophageal cancer

A 14-year Oxford University study of nearly a million middle-aged Britons found that drinking beverages at 65 degrees Celsius or above increased squamous cell oesophageal cancer risk nearly threefold compared to… pic.twitter.com/zeJkV5XlBf

— NewsTongue (@NewsTongueX) September 9, 2026

Media headlines often blur the science by saying “tea and coffee cause cancer” or by promising an “exact number to avoid.” The stronger point is simpler and more accurate: do not drink beverages at scalding temperatures. Let hot drinks cool below very hot. Take smaller sips. Avoid rapid refills while the mug is still near boiling. These low-cost steps cut thermal injury without telling people to give up tea or coffee. They respect both personal choice and the evidence.

Why This Matters Beyond Health Headlines

Public trust falls when officials or media turn “probable, temperature-specific risk” into broad claims about favorite drinks. People on the left and the right share that frustration. Clear, plain guidance helps. The evidence supports one practical, nonpartisan step: avoid very hot drinks. Future research can tighten the numbers by measuring actual temperatures over time and checking the esophagus for injury markers. Until then, common sense cooling is the safest course grounded in today’s data.