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.
Does a Fast Heart Rate Mean a Greater Risk for Heart Disease? The study looked at 50,000 men and women without heart disease over an eighteen year period. After taking into account their lifestyle and exercise habits, they found a high resting pulse rate was associated with a greater risk of heart rate.