Estrogen Found to Boost Women's Sex Drive

Monday, 29 Apr 2013 12:21 PM

 

Share:
  Comment  |
   Contact Us  |
  Print  
|  A   A  
  Copy Shortlink
A new study on female hormones and sexual desire finds that estrogen, not testosterone, can boost libido in a woman's natural cycle, while progesterone deadens it, they say. Not coincidentally, this increase in desire works in favor of a woman's fertility.

"We found two hormonal signals that had opposite effects on sexual motivation," said lead author James Roney of the University of California Santa Barbara. "Estrogen was having a positive effect, but with a two-day lag. Progesterone was having a persistent negative effect, both for current day, day before, and two days earlier."

Roney and his team recruited undergraduate students and measured their hormonal levels against self reports of sexual desire. The researchers saw a "measurable increase" in progesterone levels at the same time the subjects reported drops in libido.

The team also discovered a lack of impact of testosterone on women's sexual motivation, which counters a common belief. "Doctors tend to believe that, though the evidence isn't that strong in humans," Roney said. "In the natural cycles, we weren't finding effects of testosterone."

However, testosterone does have a positive effect on sexual desire during hormone replacement therapy, but Roney said that may be a pharmacological effect.

"Testosterone has those effects if you inject it externally in women who are menopausal, and there are a lot of reasons that might be the case," he said. "For example, testosterone can be converted to estrogen through a particular enzyme. If you inject menopausal women with testosterone, it might be acting as a device that's delivering estrogen to the target cells. So the fact that it works doesn't necessarily mean it's an important signal in the natural cycle."
 

© AFP/Relaxnews 2014

Share:
  Comment  |
   Contact Us  |
  Print  
  Copy Shortlink
Around the Web
Join the Newsmax Community
>> Register to share your comments with the community.
>> Login if you are already a member.
blog comments powered by Disqus
 
Email:
Retype Email:
Country
Zip Code:
 
Hot Topics
Follow Newsmax
Like us
on Facebook
Follow us
on Twitter
Add us
on Google Plus
Around the Web
You May Also Like

Medical Mistake Epidemic: 5% of US Adults Misdiagnosed Each Year

Thursday, 17 Apr 2014 12:54 PM

At least 5 percent of American adults -- 12 million people -- are misdiagnosed in outpatient settings every year, and ha . . .

Scientists Push to Fast Track Cancer Drugs

Thursday, 17 Apr 2014 12:36 PM

Scientists and drugmakers are pioneering a new kind of clinical trial that changes the way cancer drugs are studied, pot . . .

'Good' Fat Breakthrough Holds Promise of New Obesity Treatments

Thursday, 17 Apr 2014 12:28 PM

In a possible advance for obesity research, an MRI scan has pinpointed good brown fat in a living adult for the first  . . .

Newsmax, Moneynews, and Independent. American. are registered trademarks of Newsmax Media, Inc. Newsmax TV, NewsmaxWorld, NewsmaxHealth, are trademarks of Newsmax Media, Inc.

 
NEWSMAX.COM
America's News Page
©  Newsmax Media, Inc.
All Rights Reserved