When a patient with palpitations asks whether to give up coffee, the useful question is what they are actually drinking. Moderate filtered coffee has randomised evidence of less atrial fibrillation, not more, and telling a patient to stop it removes something with a reasonable safety record while doing nothing for their symptoms. Energy drinks are a different exposure, delivering far higher doses alongside other stimulants, and the evidence there points towards harm.
Two refinements are worth carrying. Coffee reduced atrial fibrillation but increased premature ventricular contractions, so a patient whose monitor shows ectopy rather than AF may genuinely be describing a caffeine effect. And unfiltered coffee raises LDL while filtered does not, so in a patient struggling to reach a lipid target it is worth asking how the coffee is made before adding another drug.
- Ask what they drink, not just how much caffeine
- Moderate coffee is associated with less AF, not more
- Ectopy, unlike AF, may genuinely worsen with coffee
- Unfiltered coffee raises LDL; ask before escalating lipid therapy
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for cardiology, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free