What blood pressure number should you become concerned at?

Blood pressure: It depends on age and hight , but for adults any systolic blood pressure above 130 starts to be considered on the high side, but it starts to be concerning when it is above 140-150 and diastolic blood pressure is above 95-100 and for long time without being addressed because it may lead to left heart hypertrophy and dysfunction over the years. Blood pressure for diabetics should even lower.

Worrisome BP: Studies have shown us that the risk of end organ disease (damage to vital organs like the heart, brain, and kidneys) is a concern if the blood pressure is >140/90 in an individual with no concurrent illnesses. In those with diabetes, know heart disease, and other concerning co-factors, the goal BP may be even less.

It depends: The short answer is that we used to consider 140/90 as borderline and anything over this number was an indication for treatment. Over the years, the medical experts have stressed lower blood pressures. At this time, one would theoretically like to see your blood pressure in the 120/70ish range. However, many factors are involved in reaching optimal pressure in the context of your health.