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Overview
Erectile dysfunction (ED) is the inability of a man to achieve
or maintain an erection sufficient for his sexual needs or
the needs of his partner. Most men experience this at some
point in their lives, usually by age 40, and are not psychologically
affected by it.
Some men, however, experience chronic, complete
erectile dysfunction (impotence), and others, partial or brief
erections. Frequent erectile dysfunction can cause emotional
and relationship problems, and often leads to diminished self-esteem.
Erectile dysfunction has many causes, most of which are treatable,
and is not an inevitable consequence of aging.
Incidence and Prevalence
The term "erectile dysfunction" can mean the inability
to achieve erection, an inconsistent ability to do so, or
the ability to achieve only brief erections. These various
definitions make estimating the incidence of erectile dysfunction
difficult. According to the National Institutes of Health
in 2002, an estimated 15 million to 30 million men in the
United States experience chronic erectile dysfunction.
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