ABSTRACT
In general, overall sexual function tends to decline in healthy aging men (1). The latent time period between sexual stimulation and erection increases, erectile turgidity decreases, ejaculation is not as forceful, the volume of the ejaculate is reduced, and the interval between erections becomes longer. Testosterone levels and penile sensitivity to stimulation are reduced, and there is an increase in cavernous muscle tone. Chronic medical conditions frequently associated with aging also contribute to the rising incidence of erectile dysfunction (ED). Approximately 50% of the men with long-standing diabetes have ED (1), and chronic renal failure has also been correlated with reduced erectile function and libido. Men with coronary artery disease or heart disease, peripheral vascular disease, and stroke also have an increased risk of ED (2-4). Other factors associated with ED include smoking, hypertension, obesity, dyslipidemia, lack of physical activity, stress, and chronic alcoholism or drug abuse (5,6).
