You must be at least 17 years old to donate to the general blood supply, or 16 years old with parental/guardian consent, if allowed by state law. Learn more about the reasons for a lower age limit.
Other Causes of Elevated Heart Rate. Elevated heart rate when sick is actually your heartâs aid in order to quell the sickness. However, there can be other causes for elevated heart rate as well. Electrical signals produced and sent to the heart tissues are responsible for controlling the heart rate.
Itâs important to keep a check on your heart rate by ensuring that your blood pressure is checked every now and then. If you find your blood pressure and heart rate elevated most of the times then you should immediately book an appointment with a doctor. This is especially important if you find your heart rate elevated even without any obvious cause. Elevated heart rate when sick is understandable but elevated heart rate while you are resting is a worrying sign. To put it simply, if you find your heart rate over 85 while you are resting and canât find any logical or obvious explanation for it then you should contact your doctor right away.