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A member asked:

Can caffeine kill someone with irregular heart beat? my cardiologists says a cup can't hurt but i'm scared . i miss it . it's been over two years .

A doctor has provided 1 answer

Caffeine: Caffeine can be a rhythm irritant. In general a single cup of coffee isn't enough to cause a problem. There could be an individual with an unusual increased sensitivity however. Why not drink decaffeinated coffee, it tastes much the same and has almost no caffeine.

Answered 4/22/2015

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