[Epidemiology and age-related risk factors of erectile dysfunction]

Erectile dysfunction (E. D.) affects millions of men in the whole world. The prevalence of erectile dysfunction in the best conducted study, the Massachusetts Male Aging Study (MMAS), was 52% of male subjects aged 40 to 70 years. ED is strongly associated with age. Multiple risk factors, such as chronic illness, hypertension, diabetes, medication, operation in the pelvis, smoking and alcohol consumption, have a negative influence on erectile function.