Scientists reported their results today at the 84th Annual Meeting of The Endocrine Society.
"This study represents a new milestone in the treatment of men with low testosterone," said Christina Wang, MD, REI Investigator in the Division of Endocrinology, Metabolism & Nutrition and Director, Harbor-UCLA General Clinical Research Center. "It is the first study to demonstrate that long-term use of testosterone gel replacement is both safe and effective. Because hypogonadism requires continuous treatment, it is important to understand the effects of testosterone replacement therapy over an extended period of time."
The U.S. Food and Drug Administration (FDA) estimates that four to five million American men have low testosterone, but only about five percent are currently treated. It is also estimated that low testosterone affects about one in 10 men between the ages of 40 and 60 and more than two in 10 men over the age of 60. Low testosterone, also called hypogonadism, is linked with conditions such as diminished interest in sex, erectile dysfunction (ED), osteoporosis, reduced lean body mass, depressed mood and fatigue.
In the trial, led by REI investigators, 92 hypogonadal men, with an average age of 52, received continuous replacement with testosterone gel for up to 42 months (average 29 months). Initially, each man was treated with one percent testosterone gel (AndroGel) at 5 or 10 grams per day, with a dose adjustment to 7.5 grams per day in some men at three months to maintain testosterone levels in a normal range. There wer
Contact: Barbara Kerr
Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center (LA BioMed)