What is the most common physiological cause of erectile dysfunction?

What is the most common physiological cause of erectile dysfunction?

• A. Atherosclerosis
• B. Diabetes mellitus
• C. Hypertension
• D. Low testosterone

Answer: (A)

Erection relies on rapid arterial inflow to the penis and proper venous occlusion to trap that blood. The most common physiological problem that disrupts this process is atherosclerotic disease narrowing the penile arteries, which reduces arterial inflow and prevents the rise in penile blood pressure needed for an erection. This link to systemic vascular disease explains why ED is so often associated with aging and risk factors like smoking, high cholesterol, and hypertension. Diabetes is a strong risk factor and can worsen ED through vascular and nerve damage, but it’s not the single most common mechanism. Low testosterone can contribute to ED, but hormonal deficiency is a less frequent cause of the physiological dysfunction that prevents erection.

Erection relies on rapid arterial inflow to the penis and proper venous occlusion to trap that blood. The most common physiological problem that disrupts this process is atherosclerotic disease narrowing the penile arteries, which reduces arterial inflow and prevents the rise in penile blood pressure needed for an erection. This link to systemic vascular disease explains why ED is so often associated with aging and risk factors like smoking, high cholesterol, and hypertension.

Diabetes is a strong risk factor and can worsen ED through vascular and nerve damage, but it’s not the single most common mechanism. Low testosterone can contribute to ED, but hormonal deficiency is a less frequent cause of the physiological dysfunction that prevents erection.