4 doctors weighed in:

Why do people with heart illnesses have heart pain after a cup of coffee?

4 doctors weighed in
Dr. Bennett Werner
Internal Medicine - Cardiology
2 doctors agree

In brief: Caffeine

Coffee contains caffeine which is a cardiac stimulant: it makes the heart beat faster and may cause rhythm disturbances.
When the heart beats faster, the heart muscle needs more oxygen. If there is blockage present, rapid heart rate can outstrip the blood supply which hurts (angina). Even with a normal heart, skipping can feel uncomfortable.

In brief: Caffeine

Coffee contains caffeine which is a cardiac stimulant: it makes the heart beat faster and may cause rhythm disturbances.
When the heart beats faster, the heart muscle needs more oxygen. If there is blockage present, rapid heart rate can outstrip the blood supply which hurts (angina). Even with a normal heart, skipping can feel uncomfortable.
Dr. Bennett Werner
Dr. Bennett Werner
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Dr. Andrew Kaplan
Internal Medicine - Cardiology

In brief: Elevated heart rate

This is very atypical.
However, caffeinated coffee may elevate the heart rate and cause it to squeeze with more force or cause an arrhythmia with an elevation in heart rate. This increases the heart's oxygen demand. If supply cannot increase, the result may be angina (heart pain).

In brief: Elevated heart rate

This is very atypical.
However, caffeinated coffee may elevate the heart rate and cause it to squeeze with more force or cause an arrhythmia with an elevation in heart rate. This increases the heart's oxygen demand. If supply cannot increase, the result may be angina (heart pain).
Dr. Andrew Kaplan
Dr. Andrew Kaplan
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