Erectile
dysfunction (impotence) is the consistent inability to sustain an erection
sufficient for sexual intercourse or the inability to achieve ejaculation or
both. Sexual dysfunction include problems with libido, erectile function, and
ejaculation (Nehra, 2009).
Berrada
et al., (2003) reported a Survey of men between 35 and 75 years of age
seeking primary health care indicated that the age prevalence of ED were 57.4%
in Nigeria, 63.3% in Egypt, and 80.8 % in Pakistan.
According
to the National Institutes of Health (NIH) USA, 15 million to 30 million men
are affected by erectile dysfunction, According to the American Urological Association,
as men grow old, the level of circulating testosterone decreases, which may
interfere with normal erection.
While a low testosterone level itself is rarely the cause of erectile dysfunction (5 percent or less), low testosterone can be an additional contributing factor in many men who have other risk factors for erectile dysfunction. Other risk factors for ED include various medical problems such as hypertension (abnormally high blood pressure), diabetes, vascular disease, and high levels of blood cholesterol. Smoking, drug and alcohol abuse also are risk factors for ED (Melman and Rehman, 1999).
While a low testosterone level itself is rarely the cause of erectile dysfunction (5 percent or less), low testosterone can be an additional contributing factor in many men who have other risk factors for erectile dysfunction. Other risk factors for ED include various medical problems such as hypertension (abnormally high blood pressure), diabetes, vascular disease, and high levels of blood cholesterol. Smoking, drug and alcohol abuse also are risk factors for ED (Melman and Rehman, 1999).