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.
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.his 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.