Erectile dysfunction is the frequent or consistent inability to get or sustain an erection of the penis that is satisfactory for engaging in sexual intercourse. While most men occasionally fail to get an erection, or lose one prematurely during sexual activity, some men suffer from these problems regularly.
Accurate statistics are lacking on how many men are affected by the condition because it is often underreported, but it is estimated that about half of men over 40 in Canada have frequent problems achieving or maintaining an erection. The number of men suffering from erectile dysfunction increases with age, but it is not considered a normal part of aging. The majority of cases can be successfully treated.