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Shachter Cardiology Blog

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18 Jul, 2025

What Is High Blood Pressure? The Silent Killer Explained Simply

High blood pressure—also known as hypertension—is one of the most common and dangerous heart conditions, yet it rarely has obvious symptoms. That’s why it’s often called “the silent killer.”

In this post, we’ll break down what high blood pressure really is, why it matters, and what you can do to keep it under control.


What Does Blood Pressure Measure?

Blood pressure measures how hard your blood is pushing against your artery walls.

  • Systolic (top number): Pressure when your heart beats
  • Diastolic (bottom number): Pressure when your heart rests between beats

For example:
120/80 mmHg is considered normal.


What Counts as High Blood Pressure?

According to the American Heart Association:

CategorySystolicDiastolic
Normal< 120< 80
Elevated120–129< 80
High BP (Stage 1)130–13980–89
High BP (Stage 2)140+90+

Why Is It Dangerous?

Over time, high blood pressure can damage your:

  • Heart → leading to heart attack or failure
  • Brain → increasing risk of stroke or dementia
  • Kidneys → leading to kidney failure
  • Eyes → causing vision loss

And again—the scary part is you may never feel symptoms.


What Causes It?

Common causes include:

  • Poor diet (especially high salt)
  • Lack of exercise
  • Smoking or alcohol
  • Stress
  • Family history
  • Aging

How to Lower It (Without Medication)

Start with small lifestyle shifts:

  • ✅ Eat less sodium
  • ✅ Exercise 30 minutes a day
  • ✅ Limit alcohol and stop smoking
  • ✅ Manage stress with breathing, walking, or even music
  • ✅ Monitor your numbers at home

If lifestyle changes aren’t enough, a doctor may prescribe medication to help.


Final Thoughts

High blood pressure is silent, common, and serious—but it’s also manageable.

By understanding your numbers and making small daily choices, you can protect your heart and live longer.


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