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.
Hi - I find that my heart speeds up a lot any time I'm sick, too. I tend to have a fast pulse anyway, and I get anxious easily. When I'm sick, it seems like my heart just has to beat faster because my body is working at fighting something off. I don't know if mine gets up to 140 or 160, though. I do remember one time I had a very bad cold/flu, and I went to the ER.