Question

there is hypertension due to smoking give scientific reason​

Answer 1

The nicotine in cigarette smoke is a big part of the problem. It raises your blood pressure and heart rate, narrows your arteries and hardens their walls, and makes your blood more likely to clot. It stresses your heart and sets you up for a heart attack or stroke

Answer 2

nicotine in cigarette smoke raises blood pressure, increases heart rate, narrows the diameter of the arteries thereby causing hypertension