What causes impotence?

An erection happens when blood is pumped into the penis - and stays there - making it stiff and hard. It is a complex process, involving the blood vessels to and within the penis as well as the nervous system that controls the flow of blood and, on top of it all, the man’s emotional state. Many sorts of influences can therefore stop erections from occurring. .

Psychological causes

• Anxiety about 'performance' will almost certainly make it difficult or impossible to get an erection.
• Problems in a relationship may affect potency.
• Impotence may be caused by depression.
• Bereavement: recent loss of a loved one is notorious for causing impotence.
• Tiredness.
• Stress.
• Hang-ups - for instance, guilt about sex.
• Unresolved gay feelings.