High blood pressure (Hypertension) is a chronic medical condition where the average blood pressure elevates to more than the normal reading 140/90 mmHg specified by the World Health Organization. Should such a condition continue, it would increase the risk situation for stroke, heart disease, kidney failure, carotid artery stenosis, etc. High blood pressure is a common disease and those with high blood pressure are usually unaware of having the disease.
 
Factors that influence blood pressure

• Age
• Duration
• Emotions and feelings
Most common in men than women
• Genetic and Environments
• Geography – Those living in the cities have a higher risk than those in rural areas.
• Race
• The amount of salt in-take
   
 

More than 90%
of people diagnosed with high blood pressure, cannot determine the actual cause. However, it is believed that the factor is likely influenced by genetic and environment factors, people’s life style and the way they live their everyday life.
3% of the cases are from known specific cause, such as, kidney failure or sudden kidney inflammation, polycystic kidney disease, preeclampsia or due to certain medications such as steroid or contraceptives.


Hypertension Stage:
Stage 1 - Blood pressure between 140-159/90-99mmHg (Mild)
Stage 2 - Blood pressure between 160-179/100-109mmHg (Moderate)
Stage 3 - Blood pressure between 180/110mmHg (Severe)



As much as 74.5 million Americans aged 20 years and older have high blood pressure.
It is estimated that high blood pressure affects approximately one in three adults in the United States.
About 90-95% of people with high blood pressure, whose cause is unknown, could have this disease detected and easily brought under control.