What is normal?

Published: November, 2008

The shifting boundaries of normal and healthy cholesterol levels, blood pressure, and other health indicators.

It seems that the definitions of normal, healthy levels of blood pressure, cholesterol, and other health indicators keep changing, so that increasing numbers of people are classified as being at risk and therefore in need of treatment. Yesterday's normal becomes today's needs-to-be-treated.

To continue reading this article, you must log in.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »