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In fact, a habitual coffee habit was associated with a lower risk of developing arrhythmias, such as atrial fibrillation in which the heart races or throbs in the chest, according to the study.
The study, published Monday in JAMA Internal Medicine, analyzed the coffee consumption of more than 386,000 people over a three-year period and compared it to rates of cardiac arrhythmias, which could include atrial fibrillation.
After adjusting for demographics, lifestyle habits, diseases and conditions that could cause a heartbeat, “every usual cup of coffee consumed was associated with a 3% lower risk of incident arrhythmia,” wrote the Corresponding author and arrhythmia specialist Dr Gregory Marcus, an arrhythmia specialist. professor in the division of cardiology at the University of California at San Francisco, in the study.
Researchers also looked at genes known to be associated with coffee jitters.
The CYP1A2 gene, sometimes called the “coffee gene”, helps in the metabolism of caffeine. People with a fully functioning gene – which can be affected by lifestyle habits such as smoking – metabolize coffee at a normal rate. This means that they can, for the most part, drink coffee without any ill effects.
But when this gene mutates, the rate at which the body metabolizes coffee could slow down and the effect of coffee could last longer or be felt at a greater rate.
In its genetic analysis, the study found no significant association between impaired coffee metabolism and the risk of arrhythmia.
The idea that coffee makes your heart beat arose from older and smaller studies, including one entirely devoted to male physicians, wrote Marcus and his team at the University of California at San Francisco.
Today science has a different point of view. In fact, a “review of 201 meta-analyzes found that moderate coffee consumption is probably more beneficial than harmful to health,” Marcus wrote.
In addition, a number of “possible health benefits of caffeine and coffee in particular have emerged, such as reduction in cancer, diabetes, cardiovascular disease and overall mortality,” according to the study.
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