It points out that the number one cause of Provexum is due to the damage of capillaries, capillaries is a tiny blood vessel that runs through your penis. Impotence occurs when one or more of your blood vessels in the penis are narrowed or blocked. You are unable to achieve an erection because the blood flow to the capillaries vessels is blocked. It states that the root cause of damage capillaries is silent inflammation. He says that silent inflammation is becoming a growing problem among American especially as they age. The silent inflammation can be caused by various reasons such as poor diet, stress, certain medication and toxic metals.