What causes high blood pressure?
The causes of hypertension are multifactorial, meaning there are several factors whose combined effects produce hypertension.
- High salt intake or salt sensitivity: This occurs in certain populations such as the elderly, African Americans, people who are obese, or people with kidney (renal) problems.
- Genetic predisposition to high blood pressure: People who have one or two parents with hypertension have high blood pressure incidence about twice as high as the general population.
- A particular abnormality of the arteries, which results in an increased resistance (stiffness or lack of elasticity) in the tiny arteries (arterioles): This increased peripheral arteriolar stiffness develops in individuals who are also obese, do not exercise, have high salt intake, and are older.