What is the greatest risk factor for stroke?

• A. High cholesterol
• B. Hypertension
• C. Diabetes
• D. Obesity

Answer: (B)

Hypertension, or high blood pressure, is the greatest risk factor for stroke due to its widespread impact on vascular health. Elevated blood pressure can lead to damage in the arteries, making them more prone to rupture or blockage. Chronically high blood pressure creates stress on the vascular system, which contributes to the development of atherosclerosis—a condition that significantly increases the likelihood of both ischemic and hemorrhagic strokes.

Studies have consistently shown a strong correlation between hypertension and stroke incidence. In fact, individuals with hypertension have approximately twice the risk of stroke compared to those with normal blood pressure. Controlling hypertension through lifestyle changes and medication can dramatically reduce stroke risk, underscoring its critical role as the leading risk factor.

While other factors like high cholesterol, diabetes, and obesity can contribute to stroke risk, they often do so as secondary factors or in conjunction with hypertension. Managing hypertension is thus a central aspect of stroke prevention strategies.