No link between short-term testosterone use and prostate cancer, ...( Los Angeles Calif. Testosterone thera...),Health

Los Angeles, Calif. Testosterone therapy does not cause adverse effects on the prostate in older men with hypogonadism, commonly known as low testosterone or low T, according to a clinical trial presented today at a national urology meeting in Atlanta. The study, which focused on direct measurement of testosterone in prostate tissues, carries important implications for the millions of men with low testosterone, who may benefit from testosterone replacement therapy. Results from the study were presented in two abstracts at the American Urological Association annual meeting.

"We found no evidence that testosterone replacement therapy negatively affects the prostate or its tissues in hypogonadal men following six months of treatment," said Dr. Leonard Marks, co-investigator, Clinical Associate Professor in the Department of Surgery/Urology at the UCLA School of Medicine and founding medical director of Urological Sciences Research Foundation (USRF). "Patients should be comforted by these results, but large-scale, long-term trials are still needed."

Testosterone is a hormone involved in regulating prostate growth, both benign and malignant. When testosterone is boosted, the effect on the prostate is a main concern in older men. However, this study showed that when serum testosterone levels are increased to the mid-normal level, the prostate effects are minimal, at 6-months.

In the randomized, placebo-controlled clinical trial, investigators examined the effects of testosterone (T) in 41 men, ages 50-75 years old with hypogonadism (ADAM score and morning T<300 ng/dL) for a 6-month period. Twenty-one men received testosterone intramuscular injections (150 mg every two weeks); 20 men received placebo. The study was powered to detect a 25% increase in dihydrotestosterone (DHT) in prostate tissue. The groups were comparable at baseline for age, serum T and DHT, Prostate-Specific Antigen (PSA), Prostate Volume (PV) and median prostate lev
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21-May-2006

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