Erectile dysfunction, commonly referred to as ED (formerly impotence) is the inability to achieve and sustain an erection sufficient for satisfactory sexual intercourse.
According the NHS, it is estimated that 50% of men between 40 and 70 years of age will experience ED at least once.
In order to achieve an erection three conditions must occur:
- The nerves to the penis must be functioning properly
- The blood circulation to the penis must be adequate
- There must be a stimulus from the brain.
If there is something interfering with any or all of these conditions, a full erection will be prevented.
A common problem that affects the majority of men at some point in their life is the occasional failure to achieve an erection. This can occur for a variety of reasons, such as from drinking too much alcohol or from being extremely tired.