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London: Drinking coffee, including in people who consume up to 25 cups a day, may not be as bad for arteries and heart as previously thought, a study claims.

Arteries carry blood containing oxygen and nutrients from our 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, by researchers from the Queen Mary University of London in the UK, of over 8,000 people 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, researchers said.

Coffee consumption was categorised 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.

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.

“Despite the huge popularity of coffee worldwide, different reports could put people off from enjoying it,” said Kenneth Fung, from Queen Mary University of London.

“Whilst 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,” Fung said.

Although the study included individuals who drink up to 25 cups a day, the average intake amongst the highest coffee consumption group was five 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,” he 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,” said Professor Metin Avkiran, Associate Medical Director at the British Heart Foundation.

“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 potential detrimental effects of coffee on our arteries,” said Avkiran.




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