Impotence, which is the medical term “erectile dysfunction” (ED) – the inability to achieve or maintain an erection sufficient for satisfactory sexual activity.
Although it can be safely said that every man experiences erectile dysfunction from time to time, impotence is defined in medical terms as the inability to maintain an erection sufficient for intercourse in at least 25% of attempts.
Erectile dysfunction is a fairly common situation, it is estimated that at some point may affect more or less half of men between 40 and 70 years. Until recently it was a subject not often dealt with openly. Myths and cultural expectations of male sexuality have prevented many men seek help for a disorder that can, in most cases, benefit from medical treatment.
What does a normal erection?
When there is sexual stimulation, blood flow into the penis is very low, which keeps it flaccid or erect. When a man is sexually stimulated, the arteries in the penis relax and widen, and blood flow to the penis increases greatly. As the penis expands, the veins, which would have to return blood from the penis into the circulation of return-compressed, and blood can not leave. With more blood flow and very little coming out, the penis increases in size and consistency, leading to an erection