Drinking Up to 25 Cups of Coffee a day Safe for Your Heart: Study

Drinking up to 25 cups of coffee a day is safe for your heart health as a new study finds that drinking lots do not stiffen the arteries.

Coffee lovers who drink a lot of coffee need not worry about their heart health as a new study finds that increased consumption does not stiffen the arteries. The findings of the study are presented at the British Cardiovascular Society Annual Conference.

The research from the Queen Mary University of London has shown that drinking coffee, including in people who drink up to 25 cups a day, is not associated with having stiffer arteries.

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‘Coffee addicts rejoice!!! Even drinking 25 cups of coffee a day is not bad for your heart.’

The research, led by Professor Steffen Petersen, was presented today at the British Cardiovascular Society (BCS) Conference in Manchester and part-funded by the British Heart Foundation (BHF).

Arteries carry blood containing oxygen and nutrients from your heart to the rest of your body. If they become stiff, it can increase the workload on the heart and increase a person's chance of having a heart attack or stroke.

The study of over 8,000 people in the UK debunks previous studies that claimed drinking coffee increases arterial stiffness. Previous suggestions that drinking coffee leads to stiffer arteries are inconsistent and could be limited by lower participant numbers, according to the team behind this new research.

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Coffee consumption was categorized into three groups for the study. Those who drink less than one cup a day, those who drink between one and three cups a day and those who drink more than three. People who consumed more than 25 cups of coffee a day were excluded, but no increased stiffening of arteries was associated with those who drank up to this high limit when compared with those who drank less than one cup a day.

The associations between drinking coffee and artery stiffness measures were corrected for contributing factors like age, gender, ethnicity, smoking status, height, weight, how much alcohol someone drank, what they ate and high blood pressure.

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Of the 8,412 participants who underwent MRI heart scans and infrared pulse wave tests, the research showed that moderate and heavy coffee drinkers were most likely to be male, smoke, and consume alcohol regularly.

Dr. Kenneth Fung, who led the data analysis for the research at Queen Mary University of London, said:

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"Despite the huge popularity of coffee worldwide, different reports could put people off from enjoying it. While we can't prove a causal link in this study, our research indicates coffee isn't as bad for the arteries as previous studies would suggest.

"Although our study included individuals who drink up to 25 cups a day, the average intake amongst the highest coffee consumption group was 5 cups a day. We would like to study these people more closely in our future work so that we can help to advise safe limits."

Professor Metin Avkiran, Associate Medical Director at the British Heart Foundation, said:

"Understanding the impact that coffee has on our heart and circulatory system is something that researchers and the media have had brewing for some time.

"There are several conflicting studies saying different things about coffee, and it can be difficult to filter what we should believe and what we shouldn't. This research will hopefully put some of the media reports in perspective, as it rules out one of the potentially detrimental effects of coffee on our arteries."

Source-Eurekalert