Drinking hot tea linked to higher cancer rates

Drinking hot tea linked to higher cancer rates

More specifically, the researchers said, those who drank 700 milliliters (roughly 24 ounces) or more of tea per day at a temperature of 60°C (140°F) had a "90 percent higher risk of esophageal cancer", compared to those who did not. In fact, the study by the American Cancer Association found that esophogeal cancer doubled in people who drank their tea at a boiling-hot level.

The new study achieved this by following 50,045 individuals aged 40 to 75 years for a median of 10 years. "However, according to our report, drinking very hot tea can increase the risk of esophageal cancer, and it is therefore advisable to wait until hot beverages cool down before drinking", said Dr Farhad Islami of the American Cancer Society, who was lead author of this report in the International Journal of Cancer. Each participant was surveyed about their tea-drinking habits, including how often they drank tea.

Data showed 317 of the 50,045 people developed cancer cells, and most of the stricken people had a preference for "very hot tea", said an abstract of the study.

The association between hot beverages and esophageal cancer isn't new, but this is the first study of its size to track people in real time and analyze the specific temperatures of a hot drink.

The American Cancer Society estimates that 13,750 cases of esophageal cancer will be diagnosed in men and 3,900 new cases in women in the USA in 2019.

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The study included information from "objectively measured tea temperatures" above and below 60 degrees Celsius, preference data from those who enjoyed "very hot" versus cold or lukewarm tea, and the amount of time before participants waited to drink their tea after pouring (less than two minutes and more than six minutes).

In particular, it cited countries including China, Iran and those in South America, where teas such as the bitter herbal infusion mate are traditionally drunk at extremely high temperatures - above 65 or 70 degrees Celsius (150 or 160 degrees Fahrenheit).

The study found that people who drank too-hot tea and also had issues with alcohol and tobacco were especially at risk. Yet another study has been released which offers further confirmation that drinking - and presumably eating - things at a high temperature is likely to boost the odds of developing throat cancer in your esophagus.

While experts haven't identified the underlying mechanism behind the cancer link, researchers believe frequently consuming scalding hot liquids may result in long-term injury to the cells lining the esophagus.

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