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Normal Blood Pressure

Updated on September 8, 2007

Normal Blood Pressure

What is a normal blood pressure?


How do you know if your blood pressure is normal or not? When should you check your blood pressure? Should you have your blood pressure checked by a doctor or should you do it all yourself?


Discover normal blood pressure readings and what they mean in this article by Dr Gordon Cameron 


But hey .... first things first. How do you know if your blood pressure is high, low or normal? Answer - easy ! You just need to have it checked from time to time don't you.

So ............


Blood Pressure Monitors - What can a blood pressure monitor do for your blood pressure readings?

Do you own a blood pressure monitor?

See results

Is My Blood Pressure Normal? - What is your blood pressure reading?

It sounds too obvious really doesn't it - but if you don't know what your blood pressure reading is, then how will you know if it's normal or not?

Blood pressure monitors for home use are now cheap to buy and there is increasing evidence that they are more accurate at assessing blood pressure than a one off check from your doctor or nurse?

Do you have a blood pressure monitor? Amazon could ship you a good one today .......

What is Normal Blood Pressure?

Understanding your blood pressure readings

Normal Blood Pressure

The target blood pressure reading for most people is now well defined by research.

Two numbers are always used to describe your BP reading.

The first number refers to the Systolic Blood Pressure and the second number relates to the Diastolic Blood Pressure.

A typical blood pressure reading might be written in your doctors notes as BP = 145 / 75 mmHg.

This means that the systolic reading is 145 mm of mercury and the diastolic reading is 75 mm of mercury. When speaking about these numbers your doctor might say “one hundred and forty five over seventy five” – using the word “over” in place of the slash between the numbers

Normal blood pressure readings should be below 140/85 if you do not have diabetes and below 130/80 if you do.

The high number in the above examples is called the systolic reading and the lower number is called the diastolic reading. It's the combination of these two numbers that decides the need for treatment in any given case.

The machine used to obtain a blood pressure reading is called a sphygmomanometer. In years gone by these machines were filled with a column of liquid mercury – a bit like the sort of thermometer that your grandmother might have used to check your temperature. Because of this historical measuring method, BP reading measurements are still given today in mm of mercury or mmHg for short (Hg is the chemical symbol for mercury).

Systolic Blood Pressure Reading

The systolic pressure reading measures the force that the heart uses when it contracts and pushes the blood round the arteries of the body. The systolic level is the higher of the two numbers recorded.

Diastolic Blood Pressure Reading

The diastolic pressure reading measures the force that is needed to fill up the heart as it relaxes and gets ready for its next contraction. The diastolic level is the lower of the two numbers recorded.

Pulse Pressure

The pulse pressure reading is calculated by subtracting the diastolic reading from the systolic reading. So with a blood pressure reading of 145 / 70 then the pulse pressure would be equal to 145 minus 70 or 75.

To remind you again then:

* if you are diabetic then a normal (or acceptable) blood pressure would be below 130/80

* if you are not diabetic then a normal blood pressure reading would be below 140/85

Hyperexol For High Blood Pressure

Discover the new non drug treatment of high blood pressure

Hyperexol is a new non drug treatment for high blood pressure. If you have mild high blood pressure it can be taken on its own. If your problem is more significant then you can take Hyperexol in combination with other blood pressure medicines.

Get more details about Hyperexol here.

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    • profile image


      6 years ago

      on what i have read i think it would be better for me to buy my own sphygmamometer. I am not growing any younger anymore. Could you help me in choosing a good sphyg? my friend suggested me to buy at this link where she have been ordering for quite while now with their medical instrument for their new clinic.

    • profile image


      10 years ago

      very informative and educational, many people do not know what the blood pressure readings mean.

    • profile image


      10 years ago

      Make me know how to measure my blood pressure,five stars.

      diagnostic set blood pressure monitor

    • profile image


      10 years ago

      Very informative lens. Thanks for the information 5*****.

    • KCStargazer profile image


      11 years ago

      Great info and resources here! A big ol' lensroll to my Heart Attack and Stroke Awareness lens. Edinburgh, eh? Beautiful city - been long time since I was there yet still clear in my memory. Daylight so early in summer- thought we missed the train!


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