Is the bottom number the only one that matters in high blood pressure?

Is the bottom number the only one that matters in high blood pressure?

Answer: 

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Both numbers in your blood pressure reading count. A reading below 120/80 is normal.

 

If your top number is 120 to 139 or your bottom number is 80 to 89, you have prehypertension. It means you could end up with high blood pressure unless you take steps to prevent it.

 

If your top number is 140 or above and your bottom number is 90 or above, you have high blood pressure. The higher the number, the greater your health risks.

http://www.m.webmd.com/a-to-z-guides/rm-quiz-hypertension?ecd=wnl_day_082513&ctr=wnl-day-082513_ld-stry&mb=GULHw1r0yczQttMGkoWNR%40HnVev1imbCX2R%2fDNcXcrE%3d