A normal heart rate for a healthy adult is between 60 and
100 beats per minute. Heart rates of more than 100 beats per minute
(tachycardia) can be caused by:
Exercise or stress. This fast heart rate usually
returns to normal range (60 to 100 beats per minute) with rest and
Illnesses that cause fever. When the cause of the fever
goes away, the heart rate usually returns to normal.
Dehydration. When the dehydration is treated, the
heart rate usually returns to normal.
Medicine side effects,
especially asthma medicines.
Heavy smoking, alcohol, or too much
caffeine or other stimulants, such as diet pills. Stopping the use of tobacco,
alcohol, caffeine, or other stimulants may help your heart rate return to
Cocaine, amphetamines, and methamphetamines.
Babies and children younger than 2 years old have higher
heart rates because their body metabolism is faster. Heart rates decrease as
children grow, and usually by the teen years the heart rate is in the same
range as an adult's.
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
March 12, 2014
This information is not intended to replace the advice of a doctor.
Healthwise disclaims any liability for the decisions you make based on this