What Should Your Blood Pressure Be?

 Is your blood pressure reading normal? Find out.

Sanaz Majd, MD
1-minute read

What’s a good blood pressure?  It depends on the age and size of the individual. Little kids don’t have as much gravity to deal with, so they don’t require as high of a blood pressure. For adults, the normal range for systolic blood pressure (which is the first number in the reading) is between 100 and 130 millimeters of mercury.

Millimeters mercury expresses the amount of pressure in terms of how high it can push a column of mercury – a really heavy liquid.  You probably noticed that silver stuff in some blood pressure measuring devices?  That’s mercury. 

Systolic pressures in the 90’s are OK as long as there is no fainting or dizziness, but below that is usually a sign of trouble.

The diastolic pressure (or the second number) should ideally be below 80. There is no official number for a low diastolic blood pressure and there are few conditions that cause it to be low without also bringing down the systolic.

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Please note that all content here is strictly for informational purposes only. This content does not substitute any medical advice, and does not replace any medical judgment or reasoning by your own personal health provider. Please always seek a licensed physician in your area regarding all health related questions and issues.

About the Author

Sanaz Majd, MD

Dr. Sanaz Majd is a board-certified Family Medicine physician who graduated from Drexel University College of Medicine in Philadelphia. Her special interests are women's health and patient education.