Coffee could be more than a morning pick-me-up, according to new research

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Coffee could be more than a morning pick-me-up, according to new research

A morning cup of coffee may do more than just perk you up, according to new research.

Moderate amounts of caffeine intake — defined as about three cups of coffee or tea a day — were associated with a lower risk of developing cardiometabolic multimorbidity, study’s lead author Dr Chaofu Ke, associate professor of epidemiology and biostatistics at Soochow University in Suzhou, China, said.

Cardiometabolic multimorbidity, or CM, is the co-existence of at least two cardiometabolic ********* such as coronary heart ********, ******* and type 2 diabetes.

“Coffee and caffeine consumption may play an important protective role in almost all phases of CM development,” Ke said.

Researchers analysed data from about 180,000 people in the *** Biobank, a large biomedical database and research resource that follows people long-term. Those involved did not have cardiometabolic ********* at the outset.

The information included the participants’ self-reported caffeine consumption through coffee or ****** or green tea and the cardiometabolic ********* they developed through their primary care data, hospital records and ****** certificates, according to the study published Tuesday in the Endocrine Society’s Journal of Clinical Endocrinology & Metabolism.

Camera IconModerate amounts of caffeine intake — defined as about three cups of coffee or tea a day — were associated with a lower risk of developing cardiometabolic multimorbidity. Credit: AAP

Moderate caffeine consumers had a reduced risk of new onset cardiometabolic multimorbidity. The risk was reduced by 48.1 per cent if they had three cups a day, or 40.7 per cent if they had 200mg to 300mg of caffeine daily, compared with people who didn’t drink caffeine or drank less than one cup, Ke said.

The study had a large sample size and used multiple biomarkers to support the findings, making it a strong look at how caffeine affects heart health, University of California associate chief of cardiology for research and professor of medicine Dr Gregory Marcus said. He was not involved in the research.

“These observations add to the growing body of evidence that caffeine, and commonly consumed natural substances that contain caffeine such as tea and coffee, may enhance cardiovascular health,” Marcus said

What researchers don’t know

The methodology is strong and the results line up with existing data about caffeine and heart health, but there are still questions about the extent of the connection between caffeine and heart health, Marcus said.

“It is important to emphasise that, while these data suggest a relationship between caffeine, tea, and coffee and a reduced risk of a combination of cardiovascular *********, we need to be careful before we infer true causal effects,” Marcus said.

Because the study is observational, it can only show a connection between caffeine and heart health, he said. Other factors may actually be the cause of the improved heart health, he added.

“It ******** possible that the apparent protective effects do not truly exist at all and that the positive associations are all explained by some as yet unknown or unmeasured true determining factor,” Marcus added.

“For example, perhaps those more likely to consume these substances also tend to have a healthier diet or to be more physically active.”

The study also didn’t consider the impact of caffeine from carbonated beverages or energy drinks, meaning researchers cannot say whether those substances would also have a positive effect, Ke said.

Should you start drinking coffee?

Plenty of literature shows a benefit from caffeine consumption.

Several studies have suggested a lower risk of diabetes, Marcus said. And contrary to popular wisdom, drinking caffeine in coffee is associated with experiencing a lower risk of abnormal heart rhythms, he added, pointing to his and others’ research.

But much of that research is observational, and one study showed a mixed result, with more caffeine linked to additional daily step counts but less sleep, Marcus said.

Although the new study should provide comfort to those who already have a coffee or tea habit, it isn’t necessarily a sign to start a regular caffeine routine, Marcus said.

“It is also important to mention that more is not necessarily better,” he said.

“Even if caffeine, coffee, and tea in the amounts described in this study … are indeed healthy, there is also strong evidence that high-dose caffeine, particularly when included in artificial concoctions like energy drinks, may actually cause harmful and even dangerous heart rhythm problems.”

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