Is Your Blood Pressure Normal for Your Age? What 120/80 Really Means—and When to Be Concerned

The old belief that “normal blood pressure equals 100 plus your age” is now considered outdated. Though widely accepted in the past, modern research shows it does not reflect how the body truly works.

Earlier doctors noticed higher blood pressure in older adults and assumed it was normal. With limited data, they often accepted elevated readings instead of treating them, allowing long-term damage to go unchecked.

Today, organizations like the American Heart Association and American College of Cardiology define normal blood pressure as below 120/80 mmHg for adults of all ages.

Higher readings, especially above 130/80 mmHg, are now classified