New research is putting a familiar habit under the microscope: sipping coffee or tea at a scalding temperature. The data point toward a real connection with one form of esophageal cancer, but the bigger picture still matters, especially when the strongest known risks are smoking, heavy drinking, reflux, and obesity.
In a large University of Oxford study, people who said they preferred drinks that were “very hot” showed a much higher risk of oesophageal squamous cell carcinoma, or SCC, than those who stuck with warm beverages. Drinking six or more hot drinks a day was also tied to a higher chance of disease, while the pattern did not show up for esophageal adenocarcinoma, a different cancer that starts lower in the esophagus.
The study drew from nearly 1 million adults in the U.K., which gives the findings a lot of weight. Roughly half came from the Million Women Study and half from the UK Biobank, with participants tracked for years so researchers could watch disease patterns emerge over time.
The numbers were striking enough to catch attention. Compared with people who chose warm drinks, those who went with hot beverages had about 1.7 times the risk of SCC, and the very hot group had about three times the risk.
Researchers said that if the link is truly cause and effect, some cases might be avoidable by simply lowering the temperature a notch. Their estimate suggested that about 14% of SCC cases could potentially be prevented if people drank beverages hot instead of very hot.
That said, the study comes with a catch that matters. Drink temperature was self-reported, not directly measured, so one person’s “hot” could be another person’s “very hot,” which makes the exact risk harder to pin down.
Still, the biology behind the warning is pretty easy to follow. Very hot liquids can irritate the esophagus, and repeated irritation may create small thermal injuries over time, which is the kind of wear and tear that can set the stage for trouble.
One cancer specialist said the idea makes sense, but it should not be blown out of proportion. Esophageal squamous cell carcinoma is not the same as the more common adenocarcinoma, and in the United States the squamous type is relatively uncommon.
That context is important because people tend to jump straight to the wrong conclusion. The message is not to ditch coffee or tea, and it is not to panic over every steaming mug, but rather to stop treating blistering heat like it is harmless.
The practical advice is simple enough to live with. Let the drink cool a bit before taking that first sip, especially if a person is a heavy tea or coffee drinker and tends to prefer beverages straight off the boil.
At the same time, other risks still tower above beverage temperature. Smoking, heavy alcohol use, acid reflux, and obesity remain the more established drivers of esophageal cancer, and cutting those down can do far more for long-term health than obsessing over a mug that is a few degrees too hot.
The study adds another reminder that small habits can matter, especially when repeated every day for years. A drink that still feels cozy instead of scorching may be the easier move, and it gives the esophagus one less thing to deal with while the rest of the big risk factors stay in the spotlight.
