Very hot tea
Checked against 3 peer-reviewed sources, most recently on 9 October 2026.
Many people pour tea straight from the kettle and start sipping right away. When researchers pooled studies that compared people with and without oesophageal cancer, tea drinkers who took their tea hot or very hot had higher odds of the disease than those who drank it cooler. Most of those studies came from places where tea is drunk scalding and this cancer is common, and the cancer itself is uncommon. The fix is simple: let it cool to warm first.
The one honest fix
Let your tea cool until it feels warm, not hot, before you take the first sip.
What the evidence says
In a meta-analysis of case-control studies, tea drinkers who reported drinking their tea hot or very hot had higher odds of oesophageal cancer than those who drank it cooler - warm, cold, mild or not hot, depending on the study (pooled OR 1.88, 95% CI 1.16 to 3.07, 8 study reports)
1.88 · 95% CI 1.16-3.07
Limitations & how to read this number
Every study behind this figure is a case-control study: researchers found people who already had oesophageal cancer and people who did not, then asked both groups how hot they used to drink their tea. People who are ill may remember their habits differently, so recall can push the result up. Temperature was self-reported - nobody measured a cup - and what counted as 'hot' or 'very hot' differed between studies. The eight results disagreed with each other a great deal. Most of this evidence comes from places where oesophageal cancer is common and tea is often drunk scalding hot, especially parts of China and Iran. The few European results were small, often asked about tea and coffee together and partly concerned the other main type of oesophageal cancer, so they cannot show whether the link holds in Europe either way. This is an association between a drinking habit and a cancer, not proof that the heat itself causes it.
SourceChen Y et al. (2015) · BMC Cancer · 10.1186/s12885-015-1185-1
Squamous cell carcinoma, the type of oesophageal cancer linked to hot drinks, was estimated at about 5.3 new cases per 100,000 people per year worldwide in 2018 (age-standardised), with the highest rate, 11.1 per 100,000, in Eastern Asia
5.3 per 100,000 per year
Limitations & how to read this number
These are modelled estimates: cancer-registry data on which type of oesophageal cancer people had were applied to the World Health Organization's cancer agency estimates of all oesophageal cancers for 2018. 'Age-standardised' means the rate is adjusted so that countries with older or younger populations can be compared fairly. The worldwide figure is an average over very different places - the rate in Eastern Asia was about twice the world figure, and in an increasing number of high-income countries the other main type, adenocarcinoma, is now more common than the squamous type. So this is a sense of scale, not anyone's personal risk.
SourceArnold M et al. (2020) · Gut · 10.1136/gutjnl-2020-321600
How to actually do it
Pour your tea, then wait until it feels warm rather than hot before the first sip. The studies compared people who said they drank their tea hot or very hot with people who drank it cooler - warm, cold, mild or simply not hot, depending on the study - so drinking it warm stays inside what the evidence compared. You do not need a thermometer: if the first sip makes you flinch or you have to slurp it carefully, it is still hot.
Supporting findings (2)
In the same meta-analysis, drinking hot drinks and eating hot food was linked to higher odds of the squamous cell type of oesophageal cancer (pooled OR 1.60, 95% CI 1.29 to 2.00, 26 study reports), but not of adenocarcinoma, the other main type (OR 0.79, 95% CI 0.53 to 1.16, 4 study reports)
1.60 · 95% CI 1.29-2.00
This split covers hot drinks and hot food together, not tea alone, so it shows which kind of oesophageal cancer the heat link concerns rather than how strong the link is for tea. The squamous type starts in the thin cells lining the oesophagus; adenocarcinoma starts in gland cells near the stomach and is the more common type in many Western countries. Only four results were available for adenocarcinoma, so 'no clear link' there is not proof of no link. The same cautions as above apply: case-control studies, self-reported temperature, and mostly high-incidence regions.
SourceChen Y et al. (2015) · BMC Cancer · 10.1186/s12885-015-1185-1
In a second meta-analysis of hot tea and oesophageal cancer, four results from three European studies - each asking about tea and coffee together, two of the four for adenocarcinoma - showed no significant association (OR 0.91, 95% CI 0.44 to 1.85)
no significant difference · 95% CI 0.44-1.85
Four results from three studies is a small base. These studies asked about tea and coffee together, and two of the four results concern adenocarcinoma, the type the 2015 review did not link to heat, so this result cannot show whether hot tea is linked to the squamous type in Europe. 'No clear link' is not proof that there is none, and it is not a reason to assume tea drunk scalding hot is safe anywhere.
SourceLuo H, Ge H (2022) · Front Nutr · 10.3389/fnut.2022.831567
Go deeper
Open what you care about
What the review pooled
The 2015 review combined case-control studies of oesophageal cancer, which compare people who already have the disease with people who do not and ask both about their past habits. It looked at hot drinks and hot food together and then separately; the figure on this page is the tea-only result. Every study asked people how hot they drank their tea - none measured it - and the words used ("hot", "very hot", "scalding") differed from study to study. Across hot drinks and hot food together, the link concerned the squamous type of oesophageal cancer, not adenocarcinoma, the other main type; the tea-only result was not split by type.
How big the risk really is
Oesophageal cancer is uncommon. Worldwide, the squamous type was estimated at around five new cases per hundred thousand people a year in 2018, and the rate in Eastern Asia was about twice that. Higher odds of an uncommon cancer is still an uncommon cancer - which is why this page offers a habit to change, not a reason to worry about the tea you have already drunk.
Where the link was found, and where the evidence is thin
Most of the studies came from parts of China, Iran and South America, where oesophageal cancer is far more common and tea or mate is often drunk scalding hot. The few European results were small, asked about tea and coffee together and partly concerned adenocarcinoma, so they cannot settle whether the link holds in Europe. Part of the link may also come from how people with cancer remember their habits; the studies on this page cannot tell how much.
Questions people ask
Is tea itself bad for me?
Nothing on this page says so. The comparison was between tea drinkers who drank it hot or very hot and those who drank it cooler, so what differed was the temperature, not the tea. Letting it cool keeps the tea and changes only the heat.
Does this prove that hot tea causes cancer?
No. The link on this page comes from observational studies - case-control studies that asked people with cancer about their past habits, which can distort what they remember. It is an association, and waiting a few moments for tea to cool is a free way to act on it anyway.
What about coffee?
This page is about tea. The review behind it did not report a separate result for hot coffee, so we make no claim about coffee either way.
Sources
- Chen Y et al. (2015). Consumption of hot beverages and foods and the risk of esophageal cancer: a meta-analysis of observational studies. BMC Cancer. Meta-analysis of case-control studies. doi:10.1186/s12885-015-1185-1
- Arnold M et al. (2020). Global burden of oesophageal and gastric cancer by histology and subsite in 2018. Gut. Cross-sectional study. doi:10.1136/gutjnl-2020-321600
- Luo H, Ge H (2022). Hot Tea Consumption and Esophageal Cancer Risk: A Meta-Analysis of Observational Studies. Front Nutr. Meta-analysis of case-control studies. doi:10.3389/fnut.2022.831567
Published 10 October 2026 · Evidence last verified 9 October 2026 · adversarial fact-check + human science gate — how we check.
Corrections are published openly on the corrections page. Educational content, not medical advice — talk to a professional about your own situation.