High Blood Pressure also known as Hypertension affects 75 million Americans. Only 54% of those with high blood pressure are under control.
Normal Blood pressure systolic (top number) less than 120 mmg diastolic (bottom number) less than 80
Pre-hypertension systolic 120-130. diatonic 80-89
High Blood Pressure systolic 140 or higher. diastolic 90 or higher
References
https://www.cdc.gov/bloodpressure/effect.htm
https://www.cid.gov/bloodpressure/maps_data.htm
https://www.cdc.gov/bloodpressure/risk_factor
