But there is some debate among doctors about exactly where normal ends and abnormal begins. This second figure, the diastolic, is usually most critical and when treating high blood pressure the primary aim is usually to get this number down to below 90. However, systolic pressure can't be ignored and may also be important - there are some instances where it can be harmful if it's raised, even if the diastolic pressure is normal. However for some people it may be linked to an increased the risk of complications.
Treatment substantially reduces the risks.
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