Featured Research

from universities, journals, and other organizations

Study Finds Changes In Hormone Levels In Men Who Become Fathers

Date:
June 27, 2001
Source:
Mayo Clinic
Summary:
A published study of hormonal changes in a group of Canadian men becoming fathers for the first time showed a decrease in testosterone and cortisol levels and a higher level of estradiol concentrations, a hormone known to influence maternal behavior.

A published study of hormonal changes in a group of Canadian men becoming fathers for the first time showed a decrease in testosterone and cortisol levels and a higher level of estradiol concentrations, a hormone known to influence maternal behavior.

The study, which appears in the June issue of Mayo Clinic Proceedings, says the findings are worthy of further study, but they don’t say what, if any, physiologic relevance of the hormone changes is known.

Volunteer study subjects were recruited from first-trimester prenatal classes in Kingston, Ontario, Canada, in February 1999. As part of the study, 23 dads provided saliva samples from recruitment through three months after the birth of their children. Researchers also recruited 14 men who were not fathers from the general population to serve as age-matched controls for seasons and time of day. Estradiol, testosterone and cortisol levels were quantified.

Authors of the study are Sandra J. Berg, M.Sc., and Katherine E. Wynne-Edwards, Ph.D., of the Department of Biology at Queen’s University in Kingston, Ontario, Canada.

"Relative to control subjects, expectant fathers have lower testosterone and cortisol concentrations and more frequently detectable estradiol," says Dr. Wynne-Edwards. "These results confirm and expand on the results of the only previous study, suggesting that men’s hormones change as they become fathers."

The study’s findings included:

* The testosterone concentration was significantly lower in the overall sample of 23 dads than in the 14 control subjects

* Cortisol concentration was significantly lower in dads than in the control group.

* Dads had a higher proportion of samples with detectable estradiol concentrations.

The finding that estradiol was detected in a larger proportion of samples from dads than from controls is novel, the authors write. Men becoming fathers were exposed to more estradiol than control men, and that exposure increased after the birth of their child. Estradiol is an important hormonal component of mammalian maternal behavior in women, non-human primates and other mammals, but no animal research has yet described estradiol changes in naturally paternal male mammals.


Story Source:

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


Cite This Page:

Mayo Clinic. "Study Finds Changes In Hormone Levels In Men Who Become Fathers." ScienceDaily. ScienceDaily, 27 June 2001. <www.sciencedaily.com/releases/2001/06/010619072635.htm>.
Mayo Clinic. (2001, June 27). Study Finds Changes In Hormone Levels In Men Who Become Fathers. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2001/06/010619072635.htm
Mayo Clinic. "Study Finds Changes In Hormone Levels In Men Who Become Fathers." ScienceDaily. www.sciencedaily.com/releases/2001/06/010619072635.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Xtreme Eating: Your Daily Caloric Intake All On One Plate

Xtreme Eating: Your Daily Caloric Intake All On One Plate

Newsy (July 30, 2014) The Center for Science in the Public Interest released its 2014 list of single meals with whopping calorie counts. Video provided by Newsy
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:
from the past week

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