Friday, 25 May, 2018

Drinking Hot Tea Increases Esophageal Cancer Risk, Study Finds

Getty Images  EyeEm Getty Images EyeEm
Jerome Frank | 07 February, 2018, 01:29

The authors of this prospective cohort study analyzed high-temperature tea drinking, alcohol use, and smoking for possible associations with risk for esophageal cancer. Compared with hot tea drinking alone, hot tea drinking combined with either alcohol consumption or smoking was associated with increased risk for esophageal cancer.

Participants included 450,000 people aged 30 to 79 across ten different regions in China.

People who drank scalding hot tea, consumed excessive amounts of alcohol and also smoked had more than five times the risk of esophageal cancer than individuals who didn't do any of these things.

Lv and team uncovered a positive correlation between drinking burning-hot tea, regular alcohol intake, and smoking and a higher risk of esophageal cancer. The ten-year Chinese study factored in tea drinking. "Green tea has been shown to be a little more effective in cancer inhibition versus black tea, but black tea has been more effective in cardiovascular health".

Cases were identified from cancer and death registries and self-report during follow-up.

However, a recent study shows that in smokers and alcohol drinkers hot tea can cause esophageal cancer much faster.

Esophageal cancer is increasing in prevalence and has poor survival rates, particularly in less-developed regions and for men.

Based on the findings, Lv and colleagues advise people to choose their habits carefully and, if they find it challenging to give up their daily drink or cigarette, the researchers suggest that it's best to avoid drinking tea at very high temperatures.

In an editorial, Dr Farin Kamangar of the Morgan State University and Dr Neal Freedman of the National Cancer Institute wrote that the presumption of getting cancer due to taking hot tea has the roots in 1930's.

The study, the largest of its kind, followed close to 500,000 adults in China over an average of 9½ years. It is also by far, the biggest consumer of tea in the world.

"If you go to the Middle East or to Russian Federation, they drink it out of a samovar that's constantly under heat", said Peter Goggi, president of the Tea Association of the USA.

Researchers looked at how many people got oesophageal cancer and whether they were more likely to drink hot tea, drink alcohol regularly, or smoke cigarettes.

For example, for those who drank more than 15g of alcohol a week, there were around 1.2 cancers per 1,000 people per year, rising to 1.7 per 1,000 for those who drank burning hot tea.

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