High: A resting heart rate of 120 BPM is abnormal for an 18 year old. The most common cause for a high resting heart rate in an 18 year old is anxiety, but there are several other important causes. A few of these include cardiomyopathy/myocarditis, hyperthyroidism, infection, severe anemia, or cardiac arrhythmia. If your true resting heart rate is 120 bpm, you should see your doctor.
Answered 6/10/2014
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4 doctors weighed in across 2 answers
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
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