American Heart Association
American Heart Association: Conditions: High Blood Pressure or Hypertension
Find out why high blood pressure is dangerous to your heart and overall health. Learn why and how high blood pressure damages the heart and who is at risk for high blood pressure. Information on treatment and prevention includes a link...
Mayo Clinic
Mayo Clinic: High Blood Pressure (Hypertension)
This site from MayoClinic.com discusses hypertension. Content explores what hypertension is, the signs and symptoms, causes and risk factors, screening and diagnosis, treatment, and more.