The primary reason why high blood pressure is called a silent killer is because it comes with no particular symptoms, and only after it has caused significant damage to the heart and the arteries, do the symptoms arise.

WHO estimates suggest that globally, about 46% of adults with hypertension are unaware that they have the condition and hence, don’t know that they’re at risk of developing serious cardiovascular illnesses, including, heart attack, heart failure, a stroke and more.