Navigation Links
Women's Tears Tell Men to Back Off
Date:1/6/2011

By Maureen Salamon
HealthDay Reporter

THURSDAY, Jan. 6 (HealthDay News) -- Crying may be nature's way of telling men to give women some space: A new study indicates the smell of women's tears considerably dampens men's sexual desire.

Research by Israeli scientists examining the significance of emotional human tears suggests they are far more than watery drops squeezed from glands around the eyes. Women's tears play a functional role by emitting chemical signals that reduce testosterone levels and sexual arousal in men, the study found.

Men's and children's tears have not yet been analyzed, according to researcher Noam Sobel, of Israel's Weizmann Institute of Science, who hopes to learn if the tears from these groups also send biological signals to others.

Earlier studies had established that emotional tears contain different molecules than tears produced from cutting onions, for example, or those protecting the eyes from debris.

"The fact that emotional tears are different in content was a strong clue for us that they served as a chemo-signal," said Sobel, a professor of neurobiology at the institute. "For sure, it's a means of chemical communication. We communicate in many ways."

In a series of experiments, Sobel and his fellow researchers first determined that men could unconsciously distinguish between the smell of women's tears -- which have no discernable odor -- and odorless saline solution.

The 24 participants then viewed emotionally ambiguous pictures of women's faces, rating the sadness and sexual attractiveness of each. For 17 of the men, the faces appeared less sexually attractive after sniffing tears than after sniffing saline.

Fifty men later watched a sad film after sniffing either tears or saline, which produced a modest drop in self-rated sexual arousal and a pronounced drop in salivary testosterone levels in those who sniffed tears.

Lastly, MRI brain images of 16 men shown sexually arousing pictures and movies indicated that those who sniffed tears beforehand had lower activity in brain regions that typically show activity during arousal.

"I think this study makes overall sense because every emotional response must have been developed for an evolutionary advantage," said Dr. Alan R. Hirsch, founder and neurological director of the Smell & Taste Treatment and Research Foundation in Chicago.

"Testosterone also affects levels of aggression, so if you reduce the degree of aggression, you enhance the survivability of the woman," added Hirsch, noting that eventual clinical applications could potentially be used for sex offenders or those with sexual aggression problems.

The study was published online Jan. 6 in Science.

Sobel said the findings could spur further studies that identify the active compounds in tears and examine if chemo-signals in women's tears signal anything other than sexual disinterest.

"Now we want to identify the molecules that have the effect," he said. "Hopefully in a few years we'll have some good, strong answers."

More information

The American Academy of Family Physicians has information on emotions and health.

SOURCES: Noam Sobel, professor, neurobiology, Weizmann Institute of Science, Rehovot, Israel; Alan R. Hirsch, M.D., founder and neurological director, Smell & Taste Treatment and Research Foundation, Chicago; Jan. 6, 2011, Science, online


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Amphetamine use increases risk of aortic tears in young adults, UT Southwestern researchers report
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Women's Tears Tell Men to Back Off
(Date:10/13/2017)... ... 2017 , ... The International Association of Eating Disorders Professionals ... the field of eating disorders, announces the opening of early registration for the ... at the Omni Resort at ChampionsGate. , The annual iaedp™ Symposium ...
(Date:10/13/2017)... LUIS OBISPO, Calif. (PRWEB) , ... October 13, 2017 , ... ... Alzheimer’s or dementia. However, many long-term care insurance companies have a waiver for care ... is the 90-day elimination period, when the family pays for care, is often waived, ...
(Date:10/13/2017)... ... October 13, 2017 , ... Talented host, ... lowdown on sciatica in a new episode of "Success Files," which is an ... and innovation and investigates each subject in-depth with passion and integrity. , Sciatica ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and San Francisco dentists, ... cutting-edge Oventus O2Vent technology. As many as 18 million Americans are estimated to ... breathing. Oral appliances can offer significant relief to about 75 percent of people ...
(Date:10/12/2017)... ... October 12, 2017 , ... Asante, a nationally recognized health ... expanded their existing home health joint venture through an agreement, effective October 1, ... joint venture home health company with Asante, delivering clinically integrated care, for the ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... Oct. 2, 2017  Eli Lilly and Company (NYSE: ... for the third quarter of 2017 on Tuesday, October ... on that day with the investment community and media ... The conference call will begin at 9 a.m. Eastern ... a live webcast of the conference call through a ...
(Date:10/2/2017)... , Oct. 2, 2017 The Rebound mobile ... the struggle to reverse the tide of prescription drug addiction. ... regulating their medicine intake and stepping down their dosage in ... to launch in December 2017; the first 100,000 people to ... more at http://www.rebound-solution.com/ ...
(Date:9/27/2017)... -- Commended for their devotion to personalized service, SMP Pharmacy Solutions ... in the South Florida Business Journal,s 50 Fastest-Growing Companies, and ... the national specialty pharmacy has found its niche.  To that ... be honored by SFBJ as the 2017 Power Leader in ... receive his award in October, Bardisa said of the three ...
Breaking Medicine Technology: