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Coffee is often badociated with staying awake, but fans may have a reason to rest easy after a new study says it's not as bad for our arteries as many people think.
Research from Queen Mary University in London has shown that coffee consumption, even up to 25 cups a day, is not badociated with hardened arteries.
The study's findings contradict earlier research that coffee consumption would increase arterial stiffness, which researchers say is inconsistent and may be limited by fewer participants.
The new study, conducted on nearly 8,500 people in the UK, was funded in part by the British Heart Foundation and is due to be presented at the British Cardiovascular Society conference in Manchester this week.
The arteries carry blood containing oxygen and nutrients from the heart to the rest of the body.
If they become stiff, it can increase the workload of the heart and increase the risk of heart attack or stroke.
Coffee consumption was divided into three groups: 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 drank more than 25 cups a day were excluded. But the arteries of those who drank this impressive amount were not stiffer than those who drank less than one cup a day.
Researchers say the badociations between coffee consumption and stiffness of the arteries have been corrected to account for factors such as age, bad, ethnicity, smoking, height, weight , alcohol consumption, diet and hypertension.
Research has shown that among the 8,412 participants who had MRI heart exams and infrared pulse waves, moderate and strong coffee drinkers were more likely to be men who regularly smoked and drank alcohol.
"Despite the tremendous popularity of coffee in the world, different reports could deter people from enjoying it," said Dr. Kenneth Fung, head of data badysis for research.
"Although we can not prove a causal link in this study, our research indicates that coffee is not as harmful to arteries as suggested by previous studies.
"Although our study includes individuals who drink up to 25 cups a day, the average consumption of the most consumed group of coffee is five cups a day.
"We would like to study these people more closely in our future work so we can better advise the safety limits."
Prof. Metin Avkiran, Associate Medical Director at the British Heart Foundation, said: "Many conflicting studies reveal different things about coffee, and it can be difficult to filter what we should believe and what we should not.
"We hope this research will put some of the media stories in perspective because it eliminates one of the potential adverse effects of coffee on our arteries."
Another study published in May found that a moderate daily dose of caffeine could increase your life expectancy.
Two cups of coffee a day can add up to two years to your life, according to a study published in the European Journal of Epidemiology.
Updated: June 3, 2019 03:57
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