Featured Research

from universities, journals, and other organizations

Controversial Performance Enhancer "Andro" Affects Brains As Well As Brawn, Say Umass Researchers

Date:
July 12, 1999
Source:
University Of Massachusetts
Summary:
Athletes taking the controversial performance enhancer known as "andro" may be affecting their moods as well as their muscles, suggests a study published by University of Massachusetts researchers in the July issue of the journal Endocrinology.

AMHERST, Mass. -- Athletes taking the controversial performance enhancer known as "andro" may be affecting their moods as well as their muscles, suggests a study published by University of Massachusetts researchers in the July issue of the journal Endocrinology. The study was conducted by doctoral students Constanza Villalba and Catherine Auger under the direction of professor Geert de Vries. Auger is now a postdoctoral researcher at Johns Hopkins University. Although the study was conducted on rats, the implications for humans are important, according to the scientists.

Related Articles


"Andro," or androstenedione, is a steroid; a hormone that is produced in the body by males and females. It is sometimes sold as an over-the-counter nutritional supplement. Andro garnered attention last year when St. Louis Cardinals star hitter Mark McGwire acknowledged using it to help him train. Since then, scientists, doctors, and ethicists have been working to understand the effects of andro on the body. But while many researchers have been concentrating on how andro affects muscles and athletic performance, the UMass group of scientists has focused on what andro does to the brain. The study was conducted through the University's Center for Neuroendocrine Studies, the Neuroscience and Behavior Program, and the department of psychology.

"Steroids like andro and its more potent counterpart, testosterone, affect more than just muscle mass and home-run ability," said Villalba. "They can also affect the brain by changing the levels of neurotransmitters and consequently stimulating libido and aggression." Steroids, she explains, are critically important hormones produced in the body, in both males and females. While steroids are responsible for puberty, they also have a role in growth, behaviors, and brain development.

"Humans taking andro could potentially be susceptible to steroid-induced rage, or increased aggression as a result of the extra source of hormone," said Villalba.

Specifically, researchers studied andro's effect on a neurotransmitter called vasopressin. Vasopressin plays several roles in the brain: it governs thirst, wake-sleep cycles, and "the focus of the research" aggression. The scientists determined that, like testosterone, andro enables males to maintain high levels of vasopressin. This held true even in rats that lacked the ability to make their own male hormones.


Story Source:

The above story is based on materials provided by University Of Massachusetts. Note: Materials may be edited for content and length.


Cite This Page:

University Of Massachusetts. "Controversial Performance Enhancer "Andro" Affects Brains As Well As Brawn, Say Umass Researchers." ScienceDaily. ScienceDaily, 12 July 1999. <www.sciencedaily.com/releases/1999/07/990712080314.htm>.
University Of Massachusetts. (1999, July 12). Controversial Performance Enhancer "Andro" Affects Brains As Well As Brawn, Say Umass Researchers. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/1999/07/990712080314.htm
University Of Massachusetts. "Controversial Performance Enhancer "Andro" Affects Brains As Well As Brawn, Say Umass Researchers." ScienceDaily. www.sciencedaily.com/releases/1999/07/990712080314.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Mind & Brain News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Yoga Could Be As Beneficial For The Heart As Walking, Biking

Yoga Could Be As Beneficial For The Heart As Walking, Biking

Newsy (Dec. 17, 2014) Yoga can help your weight, blood pressure, cholesterol and heart just as much as biking and walking does, a new study suggests. Video provided by Newsy
Powered by NewsLook.com
1st Responders Trained for Autism Sensitivity

1st Responders Trained for Autism Sensitivity

AP (Dec. 16, 2014) More departments are ordering their first responders to sit in on training sessions that focus on how to more effectively interact with those with autism spectrum disorder (Dec. 16) Video provided by AP
Powered by NewsLook.com
Guys Are Idiots, According To Sarcastic Study

Guys Are Idiots, According To Sarcastic Study

Newsy (Dec. 12, 2014) A study out of Britain suggest men are more idiotic than women based on the rate of accidental deaths and other factors. Video provided by Newsy
Powered by NewsLook.com
Believing in Father Christmas Good for Children's Imaginations

Believing in Father Christmas Good for Children's Imaginations

AFP (Dec. 12, 2014) As the countdown to Christmas gets underway, so too does the Father Christmas conspiracy. But psychologists say that telling our children about Santa, flying reindeer and elves is good for their imaginations. Duration: 01:57 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins