Low Testosterone and Sex Drive
Testosterone isn't the only fuel for a man's sex drive and
performance. But low testosterone can reduce your ability to have
satisfying sex. Lack of sex drive and erectile dysfunction are sexual
problems that can result from low testosterone. If low testosterone is
the cause, treating it can help.
Testosterone and the Causes of Low Libido
Researchers haven't unraveled the mystery of just how
testosterone increases libido. It's normal for a man's sex drive to
slowly decline from its peak in his teens and 20s, but libido varies
widely between men. What one man might consider a low sex drive, another
might not. Also, sex drive changes within each man over time and is
affected by stress, sleep, and opportunities for sex. For these reasons,
defining what's a "normal" sex drive is next to impossible. Usually,
the man himself identifies a lack of sex drive as a problem. Other
times, his partner may consider it to be an issue.
Low testosterone symptoms don't always include feeling like you
have no sex drive. Some men maintain sexual desire at relatively low
testosterone levels. For other men, libido may lag even with normal
testosterone levels. Low testosterone is one of the possible causes of
low libido, however. If testosterone is lowered far enough, virtually
all men will experience some decline in sex drive.
In a large study of men in Massachusetts, about 11% overall said
they had a lack of sex drive. The researchers then tested all the men's
testosterone levels. About 28% of men with low testosterone had low
libido. These men were relatively young, with an average age of 47;
older men might have worse sexual symptoms.
Low testosterone is only one of the causes of low libido. Stress,
sleep deprivation, depression, and chronic medical illnesses can also
sap a man's sex drive.
Low Testosterone and Erectile Dysfunction
Surprisingly, low testosterone by itself rarely causes erectile
dysfunction, or ED. Low testosterone alone -- with no other health
problems -- accounts for a small minority of men with erectile
dysfunction.
Erection problems are usually caused by atherosclerosis --
hardening of the arteries. If damaged, the tiny blood vessels supplying
the penis can no longer dilate to bring in the strong flow needed for a
firm erection. Diabetes, high blood pressure, and high cholesterol are
the three main causes of atherosclerosis and erectile dysfunction.
At the same time, low testosterone is a frequent accomplice to
atherosclerosis in creating erectile dysfunction. In studies, as many as
one in three men mentioning ED to their doctor have low testosterone.
Experts believe that in men with other factors causing erectile
dysfunction, low testosterone can strongly contribute, making a
difficult situation even worse.
Strengthening the connection, low testosterone is linked in some
way with many of the conditions that lead to erectile dysfunction:
- Metabolic syndrome
- Obesity
- Endothelial dysfunction
- Diabetes
Although low testosterone isn't known to cause them, the
associations between other medical conditions and low testosterone can
be significant.
Testosterone therapy improves sex drive and satisfaction with sex
in many men. However, the long-term risks and benefits of testosterone
replacement are unknown. Research trials on testosterone replacement in
men are ongoing, although results are years away.