A study of nearly one million British lives has quietly reframed one of the nation's most cherished rituals — the morning cup of tea — as a matter of cellular consequence. Oxford University researchers have found that drinking beverages above 65°C repeatedly scorches the delicate tissue of the throat, tripling the risk of oesophageal cancer over time. The remedy asks almost nothing of us: a few minutes of patience, or a splash of milk, standing between habit and harm. In a landscape of health risks that demand sacrifice, this one asks only that we slow down.
Study links very hot drinks to triple oesophageal cancer risk; experts advise cooling to 60°C
Oesophageal cancer affects approximately 9,500 people annually in the UK, with 7,900 deaths per year.
You don't have to give up tea. You just have to wait.
Mark
So this study looked at nearly a million people's medical records. How did they actually connect hot drinks to cancer risk? Did they ask people what temperature they drank at?
Mimi
The study identified people who reported drinking beverages "very hot"—that's 65 degrees Celsius or above—and then looked at who developed oesophageal cancer. The threefold increase in risk appeared in that group compared to people who drank at cooler temperatures.
Luke
But here's the thing: we're relying on people's own descriptions of how hot they drink. "Very hot" is subjective. Did they actually measure anyone's cup temperature, or is this based on self-reported habits?
Mimi
That's a fair question. The study used the 65-degree threshold as their definition of "very hot," but you're right that the original data likely came from what people said about their drinking habits, not from thermometers.
Mark
And the cancer risk—threefold sounds dramatic. But how many people are we actually talking about? Is this a rare cancer?
Mimi
It is relatively rare. About 9,500 people in the UK develop oesophageal cancer each year, and roughly 7,900 die from it. So while the relative risk is high, the absolute number of cases is small.
Luke
Right. And the study suggests 14 percent of cases could be prevented if people stopped drinking scalding drinks. That's meaningful, but it also means 86 percent of cases would happen anyway. Smoking and alcohol are much bigger risk factors.
Mark
So the takeaway isn't "hot drinks cause cancer." It's "hot drinks are one preventable risk factor among several."
Mimi
Exactly. And it's one you can address without giving anything up—just by waiting 10 or 15 minutes for your tea to cool.
Luke
The study authors themselves said more research is needed to identify the exact temperatures linked to increased risk. So even the 65-degree threshold might not be the precise cutoff.
Mark
But 60 degrees is the recommendation. That's specific enough for people to work with.
The Pulse
- Nearly one million British medical records have confirmed what many suspected but few measured — the temperature of your tea may be quietly damaging your throat with every impatient sip.
- Freshly poured tea or coffee sits between 90 and 95°C, far above the 65°C threshold at which thermal injury to oesophageal cells begins to accumulate into measurable cancer risk.
- Oesophageal cancer kills approximately 7,900 people in the UK each year, and researchers estimate that 14% of squamous cell cases could be prevented by the simple act of letting drinks cool.
- Cancer Research UK is urging people to wait 10 to 15 minutes before drinking, or to add milk — small behavioural shifts that bring beverages down to a safer 60°C without requiring any real sacrifice.
- Experts are careful to keep perspective: smoking and alcohol remain far greater risk factors, and this finding matters precisely because it is one of the few where prevention costs almost nothing.
A study of nearly one million British lives has quietly reframed one of the nation's most cherished rituals — the morning cup of tea — as a matter of cellular consequence. Oxford University researchers have found that drinking beverages above 65°C repeatedly scorches the delicate tissue of the throat, tripling the risk of oesophageal cancer over time. The remedy asks almost nothing of us: a few minutes of patience, or a splash of milk, standing between habit and harm. In a landscape of health risks that demand sacrifice, this one asks only that we slow down.
A large-scale Oxford University study, drawing on the medical records of nearly one million Britons, has established a clear and sobering link between very hot drinks and oesophageal cancer. The culprit is thermal injury: beverages at 65°C or above repeatedly scorch the delicate cells lining the throat and food pipe, and over time that accumulated damage raises cancer risk up to threefold. Published in the International Journal of Cancer, the research identifies a threshold most people unknowingly cross every morning.
The practical gap is one of awareness. Water from a kettle pours at around 100°C and cools only to 90–95°C in the cup — still far beyond the safe zone. Cancer Research UK's guidance is disarmingly simple: wait 10 to 15 minutes, or add a splash of milk. Either brings the drink down to roughly 60°C, described by the charity as comfortable rather than scalding. No ritual needs to be abandoned; it only needs to be slowed.
Oesophageal cancer affects around 9,500 people in the UK annually and claims approximately 7,900 lives. This study focused on the squamous cell variety, and its authors estimate that eliminating scalding drinks could prevent around 14% of those cases. Dr. Keren Papier, a lead researcher, noted this is the largest such investigation in a British population — one where tea and coffee are woven into the fabric of daily life.
Crucially, experts were careful to place the finding in proportion. Smoking and alcohol remain the dominant risk factors for oesophageal cancer, dwarfing the contribution of hot drinks. The value of this discovery lies not in its magnitude but in its accessibility: unlike giving up cigarettes or alcohol, reducing drink temperature demands almost no sacrifice at all — only a few minutes of patience between the kettle and the first sip.
A study of nearly one million British medical records has found that drinking tea and coffee hot enough to scald your mouth can triple your risk of developing oesophageal cancer. Researchers at Oxford University, publishing their findings in the International Journal of Cancer, identified a clear threshold: beverages heated to 65 degrees Celsius or above pose a measurable threat to the cells lining your throat and food pipe. The damage comes from repeated thermal injury—the scorching liquid essentially burns the delicate tissue with each sip, and over time, this damage accumulates.
The practical problem is that most people have no idea how hot their drinks actually are. Water straight from a kettle sits at around 100 degrees Celsius. When poured into a cup to make tea or coffee, it cools only slightly, landing somewhere between 90 and 95 degrees—far too hot to safely drink. Yet many people do drink it at that temperature, either out of habit or impatience. The solution, according to Cancer Research UK, is straightforward: wait. Letting your brew cool for about 10 to 15 minutes brings it down to the safer range of around 60 degrees Celsius, where it becomes what the charity describes as "comfortable to drink" rather than mouth-burning. Adding a splash of milk accelerates the cooling process and provides an additional buffer.
Oesophageal cancer is relatively rare but serious. In the UK, it affects roughly 9,500 people each year and kills about 7,900. The disease develops in the food pipe and comes in two main types: squamous cell carcinoma, which grows in the inner lining cells, and adenocarcinoma, which develops in gland cells and is more closely linked to acid reflux. This particular study focused on the squamous cell variety, and the researchers found that if people stopped consuming scalding drinks, approximately 14 percent of cases could be prevented. That's a significant proportion of an otherwise serious illness.
Dr. Keren Papier, one of the study's authors, emphasized that this is the largest investigation of its kind in a British population, where tea and coffee drinking is deeply embedded in daily life. She noted that the research adds to existing evidence linking very hot beverages to increased cancer risk, though she acknowledged that more work is needed to pinpoint the exact temperatures at which risk begins to climb. Fiona Osgun, head of health information at Cancer Research UK, offered the simplest guidance: let your cup cool down a little before you take a sip.
It's worth noting that while the hot-drink connection is real, it's not the primary driver of oesophageal cancer. Smoking and alcohol consumption remain far more significant risk factors—they are much more likely to cause the disease than any amount of hot tea. Cancer Research UK was clear on this point: the most important ways to reduce oesophageal cancer risk are not smoking and cutting down on alcohol. The hot-drink finding is valuable not because it's the biggest threat, but because it's one of the few risk factors that requires almost no sacrifice. You don't have to give up tea or coffee. You just have to wait a few minutes.
Notable Quotes
Let a cuppa cool down a little before taking a sip.— Fiona Osgun, Cancer Research UK
The most important ways to reduce the risk of this cancer type are not smoking and cutting down on alcohol.— Fiona Osgun, Cancer Research UK
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