Let me guess. You're holding a cup of coffee or tea right now, and you take it hot. Maybe very hot. I've read a new study covered by The Guardian that might make you want to blow on it a little longer, and after twenty years in healthcare, I think it's worth a few minutes of your time.

The research suggests that drinking very hot beverages may triple the risk of oesophageal cancer. Not coffee itself. Not tea itself. The temperature is the issue, and that distinction matters a lot.

Forgive me for getting a bit clinical for a moment. Your oesophagus is the tube that carries food and drink from your throat to your stomach, and its inner lining is a thin layer of squamous cells. Scald that tissue over and over, drink after drink, year after year, and you get chronic thermal injury. Cells that keep having to repair themselves are more prone to mistakes during that repair, and mistakes in cell division are one road toward cancer. The International Agency for Research on Cancer has actually classified very hot beverages above 65 degrees Celsius as probably carcinogenic to humans since 2016, so this new study adds to a concern that's been building for a while.

Triple the risk sounds frightening, and I want to put that in context without fear-mongering, because I don't do that on this page. A relative risk like this one is a comparison, not a prediction about you specifically. What the study is measuring is the difference between people's habits, and the headline number describes how much higher the risk is for very hot drinkers compared to others. The absolute numbers behind that tripling matter too, and since I've only seen the early coverage so far, I'll hold off on spelling those out until I can read the full paper.

So what counts as very hot? We're talking about drinks that genuinely scald, the kind where you wince on the first sip. The IARC threshold of 65 degrees Celsius gives you a rough benchmark, though most of us don't carry a thermometer to breakfast. Your own mouth is a decent guide.

The practical fix is almost embarrassingly simple. Let your drink cool for a few minutes. Add a splash of milk. Wait until the sip is warm rather than punishing. My son Linton teases me because I nurse a single mug of coffee for a whole morning, by which point it's lukewarm, and it turns out my slow habit is accidentally the right call. If your drink is hot enough to hurt, your body is telling you something.

And to be clear, this study points a finger at temperature, not at the beverage itself. I'd hold off on drawing conclusions about coffee or tea one way or the other from this particular piece of research, because that isn't what it was designed to answer.

I'd want to see the full study details before drawing hard lines, since early coverage doesn't always capture how temperature was measured or how long participants were followed. But the direction of this evidence has been consistent for a decade now, and unlike so many scary headlines, the fix costs you nothing but three minutes of patience. Wait a bit. Sip gently. Your oesophagus will quietly thank you.