Hot Drinks and Throat Cancer: What the Research Actually Shows

The British Medical Journal flagged the research this week after it attracted considerable attention across national media. The study in question found that drinking very hot beverages could triple the risk of oesophageal cancer — the cancer that affects the food pipe (oesophagus), the tube running from the throat to the stomach.

But the BMJ raised a pointed question alongside the findings: how strong is the evidence, and should doctors now be telling patients to put down their piping hot tea or coffee?

That’s not a small question for a country that drinks around 100 million cups of tea a day. The habit is deeply ordinary — and the research, however widely reported, stops well short of establishing that hot drinks cause oesophageal cancer in the way, say, smoking causes lung cancer.

Oesophageal cancer is one of the less common but harder-to-treat cancers. According to NHS England, symptoms can include difficulty swallowing, persistent heartburn, unexplained weight loss, and food feeling stuck in the chest or throat. Most cases are diagnosed at a late stage, which is part of why survival rates remain low.

The distinction between a statistical association and a proven cause matters here. Research can show that two things occur together — in this case, very hot drink consumption and oesophageal cancer diagnoses — without confirming that one directly produces the other. Factors such as diet, smoking, alcohol use, and acid reflux (stomach acid travelling back up the oesophagus) are all established influences on oesophageal cancer risk, according to the NHS.

For now, the NHS has not issued updated guidance telling people to change how hot they take their drinks. Anyone with persistent swallowing difficulties or other concerning symptoms should contact their GP or call NHS 111.

Key information

• Symptoms to discuss with a GP: difficulty swallowing, persistent heartburn, unexplained weight loss, or a sensation of food sticking in the chest
• GP or NHS 111: call 111 for non-emergency health concerns, or contact your GP surgery for a routine appointment
• Emergencies: call 999 if symptoms are sudden or severe