Dear sir , Advicing an individual to control his blood pressure depends upon the level of hypertension the individual has.There is a stage called prehypertension
where one is adviced to keep a check on his blood pressure without depending on any drugs.
Slightly elevated blood pressure is known as prehypertension. Prehypertension will likely turn into high blood pressure
(hypertension) if you don't make lifestyle changes, such as start exercising and eating healthier. Both prehypertension and high blood pressure increase your risk of heart attack
and heart failure
here are the most accepted categories of hypertension
Prehypertension 120–139 or 80–89
Hypertension, Stage 1 140–159 or 90–99
Hypertension, Stage 2 ≥160 or ≥100
Stage 1 and 2 are treated with drugs.
Hope you find my answers useful.