ABSTRACT
In the general population ED affects, to a varying severity, up to 52% of men aged 40-70 years. In 1995, it was estimated that ED affected over 152 million men worldwide. As ED increases in incidence with age (a man aged 70 years is three times more likely to have ED than a man of 40 years) and as we are an ageing population, it is estimated that by the year 2025, over 300 million men worldwide will suffer some degree of ED.6
