❤ Heart Health Resource

What is blood pressure, and what do the numbers mean?

When you get your blood pressure taken, you receive two numbers (e.g., 120/80 mmHg). But what do they actually tell us about your cardiovascular system?

Systolic Pressure (Top Number):Measures the force your heart exerts on the walls of your arteries each time it beats.

Diastolic Pressure (Bottom Number): Measures the pressure in your arteries when your heart rests between beats.

 Ideally, normal reading is below 120/80 mmHg. Consistent readings above this range mean your heart is working harder than it should to pump blood, which can lead to blood vessel damage over time.

💡 Pharmacist Tip

Don't panic over a single high reading. Blood pressure naturally fluctuates throughout the day. Your healthcare provider is usually much more interested in your average readings over time than one isolated measurement.

Blood Pressure Categories

Blood pressure is grouped into categories based on your systolic and diastolic readings.

Category Blood Pressure Reading
Normal Less than 120 systolic and less than 80 diastolic
Elevated 120–129 systolic and less than 80 diastolic
Stage 1 Hypertension 130–139 systolic or 80–89 diastolic
Stage 2 Hypertension 140 systolic or higher or 90 diastolic or higher
Hypertensive Crisis* 180 systolic and/or 120 diastolic or higher

*If your blood pressure is this high, wait five minutes and measure again. If it remains elevated or you have symptoms such as chest pain, shortness of breath, weakness, vision changes, or difficulty speaking, seek immediate medical attention.

Key Takeaways
  • Know what the two numbers represent.5 minutes before taking your blood pressure.
  • Focus on trends rather than a single reading.
  • Measure your blood pressure correctly.
  • Share persistent elevated readings with your healthcare provider.

Related Resources

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Medical Disclaimer

The information provided in this article is intended for educational purposes only and should not be considered medical advice. It is not intended to diagnose, treat, cure, or prevent any disease, or to replace the advice of your physician or other qualified healthcare provider.

Always consult your healthcare provider before making changes to your diet, exercise routine, medications, or supplement regimen, especially if you have a medical condition, are pregnant or nursing, or take prescription medications.

Individual health needs vary, and the information presented may not be appropriate for every person.