Average Blood Pressure by Age

Blood pressure is determined by a wide range of factors, which include the amount of cholesterol in the blood as well as the blood’s viscosity levels. Age also plays a part wherein the normal or average blood pressure for a 20 year old will differ from that of a 70 year old.  With age, the average blood pressure increases  as the arteries and blood vessels begin to thicken.

How blood pressure is measured

The measurements of blood pressure are taken in millimetres of mercury and thus the acronym mmHg(mm representing millimetres and Hg being the chemical symbol of mercury). Two numbers are indicated when your blood pressure is measured. The first represents the systolic reading while the second represents dystolic reading. When you get a blood pressure reading of 120/80, 120mmHg represents the systolic reading while 80mmHg is the dystolic reading.

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Differences between dystolic and systolic readings

Systolic reading, which is represented first in a blood pressure reading, is the blood pressure level that’s recorded when blood is being pumped through the arteries by the heart to all parts of the body. The systolic reading borrows its name from systolic pressure which as mentioned above is the pressure present when blood is being pumped from the heart to the rest of the body. In simpler terms it is the level of the blood pressure when the heart has contracted or is beating. Systolic pressure is always the higher of the two.

 

Dystolic reading is represented as the last one in a blood pressure reading. It is the pressure level experienced when the heart is taking a rest before resuming the pumping action again. Simply put it is the blood pressure level when the heart is in a relaxed state. This sort of pressure is known as the dystolic pressure and is always the lower of the two.

 

Average blood pressure readings by age group

Since blood pressure changes with age different age groups have different average blood pressure readings. Below are the various age groupings and the average blood pressure readings.

 

The 15 to 19 years age group

This age group has an average blood pressure reading of 117/77mmHg. A reading of 105/73mmHg is the minimum that would be considered healthy for this age group. A reading of 120/81mmHg is the maximum that can be considered healthy for a teenager between the ages of 15 and 19.

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The 20 to 24 years age group

The average blood pressure reading for this age group is 120/79mmHg. The level should not go down below 108/75mmHg and neither should it rise above 132/83mmHg if the individual is to be considered healthy.

 

The 25 to 29 years age group

The average blood pressure reading in this age group is 121/80mmHg. A blood pressure reading of anything below 109/76mmHg would require medical attention. Equally a reading of anything above 133/84 should be a cue to seek medical help.

 

The 30 to 34 years age group

The average blood pressure reading for an adult in their early thirties is 122/81mmHg. If it goes below 110/77 medical help should be sought. Medical assistance should also be sought if the blood pressure reading of a 30-34 year old exceeds 134/85.

 

The 35 to 39 years age group

The average blood pressure reading for an adult aged between 35 to 39 years is 123/82mmHg. A blood pressure reading below 111/78mmHg should be taken as a danger sign. Also a blood pressure reading exceeding 135/86mmHg for an adult in their late thirties should be viewed as a danger sign.

 

The 40 to 44 years age group

The average blood pressure reading for an adult aged between 40 to 44 years is 125/83mmHg. Anything below the average but not going below 112/79mmHg is still healthy. So is a blood pressure reading above the average but not going above 137/87mmHg.

The 45 to 49 years age group

An adult aged between 45 to 49 should ideally have an average blood pressure reading of 127/84mmHg. Anything below the average but not less than 115/80mmHg is allowable. Also for an adult in their late forties the blood pressure reading can go slightly above the average but not exceed 139/88mmHg.

The 50 to 54 years age group

The average blood pressure reading of an adult aged between 50 and 54 years is 129/85mmHg. It should not go below 116/81mmHg and it should not exceed 142/89mmHg.

 

The 55 to 59 years age group

An adult aged between 55 and 59 years of age has an average blood pressure of 131/86mmHg. For such an adult to remain in the safe zone it should neither exceed 144/90mmHg nor sink below 118/82mmHg.

 

The 60 to 64 years age group

134/87mmHg is the average blood pressure reading of an adult in their early sixties. A reading below the average but not under 121/83mmHg should not be a cause of worry. The maximum allowed is 147/91mmHg.

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