Erectile Dysfunction
The problem of Erectile Dysfunction does not allow men to reach and maintain an erection while having intercourse. The passion for a pleasurable sexual experience does not result in proper erection or ejaculation due to a limp penis. It is caused due to an interruption between the brain signals and receptive organ. As a result men may feel disappointed, exhausted and anxious. Another name for erectile dysfunction is impotence. The chances of developing Erectile Dysfunction increase with advancing age. It is estimated that 1 in 10 men over the age of 21 suffer from impotence of ED (erectile dysfunction). The problem becomes chronic when men suffer it in silence and do not seek medical help. It is estimated that 80.8% in Pakistan men suffer from Erectile Dysfunction...
Causes
The major causes of Erectile Dysfunction(ED) can be both physical and psychological factors:

Physical Causes
1.Fatigue
2.Brain Or Spinal Cord Injuries
3.Liver Or Kidney Failure
4.Parkinson's Disease
5.Hypogonadism (non-functioning gonads)
6.Stroke
7.Alcohol
8.Radiation of Testicles
9.Prostate Or Bladder Surgery
10.Side Effects Of Medicines
Psychological Causes
1.Anxiety during sex due to past experiences.
2.Financial, Personal or Work-related Stress
3.Relationship Problems.
4.Depression.
5.Self-Consciousness
6.Negative vibes from female partner