Drinking hot tea linked to higher esophageal cancer risks: study

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Drinking hot or burning hot tea is associated with an increased risk for esophageal cancer when combined with excessive alcohol or tobacco use, a recent study showed.

The study, published Tuesday in the medical journal Annals of Internal Medicine, was conducted by Chinese researchers from the Department of Epidemiology and Biostatistics at Beijing-based Peking University.

The study collected data from a total of 456,155 Chinese participants aged between 30 and 79 and lasted for an average period of more than nine years. By 2015, it found that 1,731 people who didn't have cancer at the initiation of the study were diagnosed with esophageal cancer.

Many people prefer to drink their tea hot. /VCG Photo

"High-temperature tea drinking combined with either alcohol consumption or smoking was associated with a greater risk for esophageal cancer than drinking hot tea alone," said the study.

People who drank both burning hot tea and more than a standard serving of 15 grams of alcohol daily were five times more likely to develop esophageal cancer than those who drank tea and alcohol less frequently, the study showed. Likewise, current smokers who drank burning hot tea daily were twice as likely to develop cancer, it added.

Hot beverages at temperatures above 65 degrees Celsius could impair the barrier function of the cells lining one's gullet, or food pipe, thus making it more vulnerable to cancer-causing agents or existing inflammation, CNN quoted Neal Freedman, a senior investigator at the National Cancer Institute in Bethesda, Maryland, as saying.

Burning hot tea being poured into a cup. /VCG Photo

However, the study said no increase in esophageal cancer risk was recorded among participants who drank hot tea if they neither drank more than 15 grams of alcohol daily nor smoked tobacco.

In fact, early clinical studies suggest that polyphenols, the natural plant compounds found in tea, may play an important role in the prevention of cancer. Researchers believe that polyphenols help kill cancerous cells and stop them from growing, according to the University of Maryland Medical Center.

In that sense, tea lovers need not give up their hobby so long as they consume tea at temperatures below 65 degrees Celsius and avoid excessive alcohol or tobacco use.

Source(s): Xinhua News Agency