Navigation Links
Testosterone Supplements May Hurt Male Fertility, Study Finds
Date:5/10/2013

By Randy Dotinga
HealthDay Reporter

FRIDAY, May 10 (HealthDay News) -- Testosterone supplements are touted as a cure for low libido, but men who take them may reduce their odds of fathering a child, new research suggests.

Many men who sought infertility treatment at two U.S. clinics reported taking prescription testosterone supplements, according to a new study. And in most cases their sperm counts skyrocketed after they stopped taking the male hormone.

The study, limited to a pair of clinics in Alabama and Kansas, looked at the years 2005 to 2011. The researchers don't know if testosterone supplements, which continue to gain popularity, are contributing to even more cases of infertility now. Nor is it clear whether the hormone is harming fertility across the nation.

Still, the research suggests that testosterone spells trouble for many American men who want to have children, said study co-author Dr. Peter Kolettis, a professor of urology at the University of Alabama at Birmingham. "This has become a preventable cause of infertility."

Use of testosterone supplements -- or "T" -- is rapidly rising in the United States, and some observers think usage will remain inflated as more men see it as a possible cure for fatigue and flagging sex drive. Critics, however, question whether testosterone treatment is being prescribed to men who don't need it.

"More men are coming into [doctors'] offices asking for testosterone because they've seen the advertisements, and it looks like the fountain of youth: It will reduce fat, make them look sexier," said Dr. Bradley Anawalt, an endocrinologist and chief of medicine service at the University of Washington Medical Center in Seattle, who was not involved in the study.

But testosterone can cause side effects such as male breast growth and blood clots. And "very few physicians are warning that it will turn off their sperm production," Anawalt said.

Adding testosterone to the body through supplementation spurs a process that impedes sperm production, Anawalt said. "Men struggling with fertility should not be on testosterone," he said. "[But] this is not something that most physicians or patients are thinking about."

The study, presented Wednesday at the annual meeting of the American Urological Association in San Diego, aimed to find out how many infertile men take the supplements despite the risks.

The researchers examined medical records of more than 1,500 men with an average age of 35 who sought fertility treatment at the two clinics.

Seven percent of the men were taking supplemental testosterone prescribed by a physician. The study focused on 34 men who agreed to stop using the hormone supplements.

Overall, the sperm counts of most patients bounced back. Average sperm concentration in semen jumped from 1.8 million per milliliter to 34 million per milliliter after supplemental testosterone was discontinued.

But the sperm counts of six of the 34 patients didn't recover. Testosterone treatments normally don't hurt fertility permanently, and it's not clear if they played a role in the men's continued infertility. The study also did not prove a direct cause-and-effect relationship between testosterone supplements and lowered sperm count.

Anawalt said it typically takes between one and six months for a man's sperm count to recover after he stops using a testosterone supplement.

Kolettis, the study co-author, said certain men should avoid testosterone supplements. "I tell men not to take it until they're done having their own biological children," he said.

The supplemental testosterone in question is prescription-only, and unrelated to over-the-counter supplements marketed to increase testosterone production.

Data and conclusions presented at meetings should be considered preliminary until published in a peer-reviewed medical journal.

More information

For more about testosterone, try the U.S. National Library of Medicine.

SOURCES: Peter Kolettis, M.D., professor, urology, University of Alabama at Birmingham; Bradley Anawalt, M.D., endocrinologist and chief, medicine service, University of Washington Medical Center, Seattle; May 9, 2013, presentation, American Urological Association, San Diego


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Can Testosterone Therapy Help Obese Men Lose Weight?
2. Proposed testosterone testing of some female olympians challenged by Stanford scientists
3. Declining testosterone levels in men not part of normal aging, study finds
4. Long-term testosterone treatment for men results in reduced weight and waist size
5. Weight Loss May Increase Testosterone Levels
6. BUSM researchers identify genetic markers for testosterone, estrogen level regulation
7. Genetic markers for testosterone and estrogen level regulation identified
8. Drop in testosterone tied to prostate cancer recurrence
9. Testosterone Gel Fails to Boost Viagras Effects
10. ShapeMed - http://www.ShapeMed.com - Offers Testosterone Screening for Men in Georgia
11. In Speed-Dating Study, Testosterone Rises in Both Sexes as Love Ignites
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Testosterone Supplements May Hurt Male Fertility, Study Finds
(Date:10/13/2017)... Las Vegas, Nevada (PRWEB) , ... October 13, 2017 , ... ... of 7® Hemp CBD Oil utilizing Purzorb™ technology. Applying the Purzorb™process to full spectrum ... CBD dose required and providing a CBD form that can be easily incorporated into ...
(Date:10/13/2017)... ... October 13, 2017 , ... The Visiting Nurse Association (VNA) of Somerset ... of specialty vendors and unique items from across the nation, this holiday-themed event will ... services offered by the VNA. The boutique will be open Saturday, November 4 ...
(Date:10/13/2017)... , ... October 13, 2017 , ... ... and Agile Software Development, has been awarded a contract by the Center for ... Agreement (BPA) aims to accelerate the enterprise use of Agile methodologies in a ...
(Date:10/12/2017)... LA (PRWEB) , ... October 12, 2017 , ... Planet ... in the U.S., announced today its plans to open a flagship location in Covington, ... occupy the former Rooms To Go store next to Office Depot in the Holiday ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... delivery system that we intend to develop to enable prevention of a major ... to severe hearing loss, especially in pediatric patients. For cisplatin, hearing loss is ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... Mich. , Oct. 2, 2017 Diplomat ... 8th Day Software and Consulting, LLC , and ... 8th Day Software, based in Tennessee ... LLC. 8th Day expands EnvoyHealth,s service offerings for health ... development. "In an ...
(Date:10/2/2017)... , Oct. 2, 2017 Halo Labs announces the ... analysis system called the HORIZON at MIBio 2017 in ... subvisible and visible particulate matter in biopharmaceutical samples with unprecedented speed ... of the novel technique Backgrounded Membrane Imaging. ... The HORIZON subvisible particle analysis system ...
(Date:9/28/2017)... , Sept. 28, 2017 Cohen Veterans Bioscience ... the use of wearable and home sensors for real-time ... Early Signal Foundation, a nonprofit organization focused on disruptive ... provide an affordable analytical system to record and integrate ... ...
Breaking Medicine Technology: