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Low Testosterone Symptoms Rare



Abridged Testosterone Symptoms Rare

Study: Only Half of Men With Abridged Testosterone Possess Symptoms

By Daniel J. DeNoon
WebMD Health examination News

Reviewed By Louise Chang, MD

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Sept. 12, 2007 – As many as 25% of U.S. men possess abridged testosterone levels, but only 5.6% of men possess symptoms linked to it.

That still means some 5 million Americans suffer symptomatic low testosterone -- androgen deficiency -- suggests a study by Andre B. Araujo, PhD, as well as colleagues at Recent England Research Institutes Inc. By the year 2025, they calculate, there will be 6.5 million U.S. cases of androgen deficiency.

"The positive message here is that not all men with abridged testosterone have symptoms," Araujo tells WebMD. "There are fewer men with symptomatic androgen deficiency than there are men with low testosterone."

Only half of men with abridged testosterone -- abridged T, as it's coming to be called -- possess symptoms of androgen deficiency. The surprising finding comes from a study of about 1,500 randomly selected Boston-area men, evenly divided by age and race/ethnicity.

It's known that a man's testosterone levels decline over age. But there's no precipitous drop in a man's sex hormones as there is for a women at the time of menopause, Araujo as well as colleagues find.

"From age 30 on there is a gradual decline, 1% a year or more, in a man's testosterone production," Araujo says. "It is very gradual. There is no data to suggest anything similar a masculine menopause."

Some men with abridged testosterone production develop symptoms of androgen deficiency. These symptoms include:

  • Loss of sex drive
  • Erectile dysfunction
  • Bone loss or fracture
  • Two or more of what endocrinologists consult "nonspecific" symptoms: sleep disturbance, depressed mood, lethargy, as well as diminished physical performance.

Araujo finds that symptomatic androgen deficiency occurs in 3% to 7% of men under age 70 as well as in 18.4% of men over age 70.

Araujo as well as colleagues report their findings in the beginning online edition of the Journal of Clinical Endocrinology & Metabolism.

Testosterone Replacement Therapy: When?

So when does a man need testosterone replacement therapy? Clearly, men with symptomatic androgen deficiency would benefit from treatment incase they possess no contraindication such as prostate or breast cancer. But treatment guidelines from the Endocrine Society say symptom-free, age-related declines in testosterone should not be treated.

Robert Davis, MD, professor of urology at the University of Rochester, N.Y., says men with a waistline over 40, high-blood pressure, as well as signs of insulin resistance -- the so-called metabolic syndrome -- are at high risk of androgen deficiency.

"These men possess an incredibly high rate of androgen deficiency and treating them with testosterone may correct their metabolic syndrome because they may be capable to burn energy better with more muscle," Davis tells WebMD. "Testosterone replacement may allow these men to avoid some of the consequences of metabolic syndrome such as coronary artery disease."

Davis says that androgen deficiency is an underdiagnosed as well as undertreated problem.

"One of the myths is that testosterone supplements will cause a cancer," he says. "We as urologists possess been unduly reticent to use the drug. We know that prostate cancer often regresses when testosterone is removed, but there is very little evidence that supplementing normal testosterone levels increases risk of cancer -- as well as there is some evidence it may lower it."

But what, asks Araujo, are the risks for men who possess abridged testosterone levels but no symptoms?

Endocrinologist Sol Jacobs, MD, assistant professor of medicine at Emory University in Atlanta, says doctors should try to figure out why a patient has low testosterone. But incase there is no anatomical abnormality or disease causing his androgen deficiency, treatment may be a very pleasant idea.

"Low testosterone levels will lead to bone density loss in men," Jacobs warns. "Even incase you possess a man who says, 'I feel large as well as don't want testosterone treatment,' at least measure his bone density. But usually the scenario is the patient is symptomatic as well as wants treatment."

Jacobs notes that the question of when to offer a patient testosterone replacement is highly controversial. Even the Endocrine Society's expert panel disagreed over the exact testosterone levels at which doctors should offer testosterone replacement therapy.

"At some point we need to know what a common testosterone level is for

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