In a recent study from the University of Southern California and elsewhere, scientists found that drinking piping hot coffee, tea, and the caffeine-infused beverage yerba mate probably causes cancer.
They found beverages surpassing 149 degrees Fahrenheit (65 degrees Celsius) may increase the risk of tumors in the esophagus, which resides in the chest area below the throat.
In the study, the team aimed to determine if drinking coffee, mate, or other very hot beverages causes cancer.
The group scoured more than 1,000 studies on over 20 different types of cancer.
The scientists concluded drinking any beverage hotter than 149 degrees Fahrenheit is probably carcinogenetic to humans, placing scalding hot drinks in the same category as DDT, frying food at high temperatures, consumption of red meat, and the human papillomavirus.
According to the National Coffee Association, coffee waiting to be served should sit at 180-185 degrees Fahrenheit (82-85 degrees Celsius).
That’s around the temperature McDonald’s restaurants served coffee before a well-known lawsuit prompted the fast food chain to sell coffee at a temperature of 10 degrees lower – still far above what the researchers consider safe.
The team says in the United States, the average coffee drinking temperature is around 140 degrees Fahrenheit (60 degrees Celsius).
The temperature varies between 99-190 degrees Fahrenheit (37-88 degrees Celsius).
The researchers say that drinking yerba mate at very high temperatures – between 150 and right below the boiling point of 212 degrees Fahrenheit (66-100 degrees Celsius) – is common practice in certain countries in South America, including Argentina, Uruguay, and Paraguay.
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The study was conducted by Mariana Stern et al and published in The Lancet Oncology.
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