Prof Kistler’s study, Caffeine and Arrhythmias: Time to grind the data, is in the current issue of the Journal of the American College of Cardiology*.įor more information please consult your treating doctor or email our Heart Centre. They are still best avoided by patients with pre-existing heart conditions,” he added. September 2009 all Starbucks Espresso beverages in UK and Ireland are made with Fairtrade and Shared Planet certified coffee. “Energy drinks contain caffeine at much higher concentrations than tea or coffee, and can include other compounds, which can trigger arrhythmias. Coffee is a beverage prepared from roasted coffee beans. Regular caffeine intake of up to 300mg per day (one cup of coffee contains approximately 95mg of caffeine) appears to be well tolerated however, before getting out the coffee grinder, Prof Kistler notes there are individual cases where avoidance is sensible, and advises patients to seek medical advice before making a change to their diet. “Patients who regularly consume coffee and tea at moderate levels may even have a lower lifetime risk of developing heart rhythm problems, like atrial fibrillation.”
“Large scale studies suggest coffee and tea are safe, and some caffeinated beverages may even have long term anti-arrhythmic properties – suppressing abnormal rhythms of the heart. The Baker Heart and Diabetes Institute is an independent, internationally renowned medical research facility, with a history spanning more than 97 years. “Many doctors recommend patients with atrial or ventricular arrhythmias avoid caffeinated beverages – particularly coffee – however our extensive review of medical literature suggests this is unfounded,” Prof Kistler said.
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