Erectile dysfunction, also called impotence, is defined as a man’s inability to get an erection or maintain it long enough to have sex with a partner. For some men, impotence means they are unable to ejaculate during sex.

Erectile dysfunction or impotence happens to most men at one time or another, but studies indicate that erectile dysfunction is more common in older men, so it is often associated with the aging process in men.

Occasional impotence is often not seen as a problem, but when impotence continues for awhile, it can bring on great emotional distress for both the man and his partner.

Common Causes of Impotence or Erectile Dysfunction

Erectile dysfunction can be caused by emotional problems:

• Worry
• Fear
• Stress
• Anger
• Depression
• Lack of interest in sex, or in the sexual partner

Erectile dysfunction can also have physical causes:

• Reduced testosterone level, which can be treated with hormone therapy
• A side-effect from some medications, including meds for depression, heart disease, high blood pressure and epilepsy
• An injury to the groin, or nerve damage
• Illnesses including kidney or heart disease, or diabetes, can cause erectile dysfunction
• A reduction in blood flow to the penis, common in men who have hardening of the arteries
• Overuse or abuse of drugs including alcohol, tobacco and recreational drugs
• A possible side-effect of some medical procedures, including prostate or urinary tract surgery

Source: About.com

Question: What's the Deal with Penis Size?

What’s the deal with penis size? Guys seem obsessed with it, I know some women friends who are definite size queens, but here’s my problem. I’ve been with guys of a lot of different sizes, but there doesn’t seem an obvious link for me between size and pleasure. I have this feeling that there’s probably a right size out there for me, and when I find it that’s the man I should marry (or at least test drive!) Do you think that there’s such a thing as your genital soul mate?

There are many questions in this one. Does penis size matter? Do we actually fit together? And what makes a good lover?

The short answer to the question about size is kind of like that famous presidential quote: it matters to some of the people, some of the time... There has been surprisingly little research in this area, but you’ll find information on that research through the link below.

For the most part people’s size interests take a back seat to other considerations। Aside from your friends who are size queens, the same person might be happy driving a Toyota Tercel one day, and an SUV the next. And as folks on the discussion board are pointing out, small can sometimes be better, depending one what you want to do with it.

Source: About.com