Coffee may be off the hook

By Corin Kelly
Wednesday, 22 June, 2016

There is no conclusive evidence for a carcinogenic effect of drinking coffee, according to an international Working Group of 23 scientists convened by 迟丑别听International Agency for Research on Cancer (IARC), the cancer agency of the World Health 翱谤驳补苍颈锄补迟颈辞苍听(WHO).

A summary of the final evaluations into聽the carcinogenicity of drinking coffee, 尘补迟茅,听and very hot beverages. is published today in The Lancet Oncology, and the 诲别迟补颈濒别诲听assessments will be published as Volume 116 of the IARC Monographs.

The experts did find that drinking very 丑辞迟听beverages probably causes cancer of 迟丑别听oesophagus in humans. No conclusive evidence was found for drinking 尘补迟茅 at temperatures 迟丑补迟听are not very hot.

鈥淭丑别蝉别 results suggest that drinking very hot beverages is one probable cause of oesophageal cancer and

that it is the temperature, rather than the drinks themselves, that appears to be 谤别蝉辫辞苍蝉颈产濒别,鈥� says Dr

Christopher Wild, IARC Director.

Very hot beverages

Drinking very hot beverages was classified as probably carcinogenic to humans (Group 2A).

This was based on limited evidence from epidemiological studies that showed positive associations

between cancer of the oesophagus and drinking very hot beverages. Studies in places such as China, the

Islamic Republic of Iran, Turkey, and South America, where tea or 尘补迟茅 is traditionally drunk very hot (补迟听about 70 掳颁), found that the risk of oesophageal cancer increased with the temperature at which the

beverage was drunk.

In experiments involving animals, there was also limited evidence for the carcinogenicity of very hot 飞补迟别谤.听鈥沦尘辞办颈苍驳 and alcohol drinking are major causes of oesophageal cancer, particularly in many 丑颈驳丑-颈苍肠辞尘别听肠辞耻苍迟谤颈别蝉,鈥� stresses Dr Wild. 鈥淗辞飞别惫别谤, the majority of oesophageal cancers occur in parts of Asia, 厂辞耻迟丑听America, and East Africa, where regularly drinking very hot beverages is common and where the 谤别补蝉辞苍蝉听for the high incidence of this cancer are not as well 耻苍诲别谤蝉迟辞辞诲.鈥�

Oesophageal cancer is the eighth most common cause of cancer worldwide and one of the main causes

of cancer death, with approximately 400 000 deaths recorded in 2012 (5% of all cancer deaths). The

proportion of oesophageal cancer cases that may be linked to drinking very hot beverages is not known.

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