December 23, 2024

expert reaction to study on association between drinking coffee or tea and head and neck cancer

A study published in Wiley Cancer looks at the link between drinking coffee or tea and risk of head and neck cancer.

Dr Ben O’Leary, Clinician Scientist at The Institute of Cancer Research, London, and Deputy Director of The International Centre for Recurrent Head & Neck Cancer at The Royal Marsden Hospital, said:

“Studies like this look at very large groups of people to see if there are differences between people who developed a particular type of cancer and people who didn’t.

“They can be useful to explore ideas about personal characteristics or lifestyle choices that might be related to cancer, but it is very difficult and usually impossible to fully disentangle why you see the associations that you do.

“As the investigators highlight, more work would be needed to achieve a more detailed understanding. This would be needed before any advice or recommendations could be made.”

Prof Tom Sanders, Professor emeritus of Nutrition and Dietetics, King’s College London (KCL), said:

“This review reports the association between coffee (ordinary and decaffeinated) and tea drinking with risk of head and neck cancers. The overall conclusion is that the consumption of these beverages is associated with a slightly lower risk of cancer at these sites.

“An important limitation is that this review is based on observational studies and not randomized controlled trials. So we cannot say from this study that drinking these beverages will lower risk of these cancers. In observational studies, it is very difficult to totally eliminate confounding effects, for example, of tobacco and alcohol from the statistical analyses. Consequently, people who drink a lot of coffee and tea may be more likely to avoid other harmful behaviours such as drinking alcohol and using tobacco and so may be at a lower risk of these cancers for other reasons.

“In conclusion, the findings may be reassuring for coffee and ordinary tea drinkers because some previous studies have suggested that drinking certain hot beverages, particularly the South American herbal tea maté, is associated with a slightly increased risk of oral and throat cancer.”

‘Coffee and tea consumption and the risk of head and neck cancer: An updated pooled analysis in the International Head and Neck Cancer Epidemiology Consortium’ by Timothy Nguyen et al. was published in Wiley Cancer at 08:01 UK time on Monday 23 December 2024.

DOI: 10.1002/cncr.35620

Declared interests

Dr Ben O’Leary: previous or current funding from MRC/Wellcome/NIHR/CRUK, is on the editorial board for Clinical Oncology, and is an examiner for the Royal College of Radiologists.

Prof Tom Sanders: “Member of the Science Committee British Nutrition Foundation.  Honorary Nutritional Director HEART UK.

Before my retirement from King’s College London in 2014, I acted as a consultant to many companies and organisations involved in the manufacture of what are now designated ultraprocessed foods.

I used to be a consultant to the Breakfast Cereals Advisory Board of the Food and Drink Federation.

I used to be a consultant for aspartame more than a decade ago.

When I was doing research at King’ College London, the following applied: Tom does not hold any grants or have any consultancies with companies involved in the production or marketing of sugar-sweetened drinks.  In reference to previous funding to Tom’s institution: £4.5 million was donated to King’s College London by Tate & Lyle in 2006; this funding finished in 2011. This money was given to the College and was in recognition of the discovery of the artificial sweetener sucralose by Prof Hough at the Queen Elizabeth College (QEC), which merged with King’s College London. The Tate & Lyle grant paid for the Clinical Research Centre at St Thomas’ that is run by the Guy’s & St Thomas’ Trust, it was not used to fund research on sugar. Tate & Lyle sold their sugar interests to American Sugar so the brand Tate & Lyle still exists but it is no longer linked to the company Tate & Lyle PLC, which gave the money to King’s College London in 2006.”