While it was previously believed that a decline in testosterone was the cause of lowered libido in men, new research has proven the opposite to be true.
The study found that lowered sexual appetite in men, was the cause of declining testosterone levels, not the result of them.
Benjamin Hsu, of the University of Sydney’s School of Public Health and head author of the study, issued the statement that “decreased sexual activity and desire may be a cause, not an effect, of low circulating testosterone [levels]” in older men.
The study recruited 1,705 male participants over the age of 70 who resided in Sydney, as part of the Concord Health and Aging in Men Project. The study lasted for two-years and determined that baseline testosterone levels didn’t predict decreased desire or a decline in sexual activity.
Most surprising, however, is that researchers definitively concluded that decreased libido and sexual inactivity resulted in lower testosterone levels and not the other way around.
While these new discoveries in male sexual health are conclusive in general, the research team “[stresses] that it remains unclear what other age-related factors may be behind the reduction in testosterone levels.”
The billion dollars per year testosterone industry is built on the notion that raising testosterone levels through testosterone replacement will cause men to regain their virility.
Dr. Steven A. Kaplan of the Iris Cantor Men’s Health Center in New York says that it’s incredibly hard to tell how high (in regards to testosterone levels) is good enough, when the optimal level isn’t known.
Testosterone also doesn’t magically counteract a unhealthy lifestyle.
“What is the optimal level..? We think that the higher it is, the better it is, but we don’t know. How high is good enough? I don’t know, ” said Kaplan.