Navigation Links
Studies examine how living conditions impact reproductive health
Date:9/28/2009

When costs outweigh benefits, successful pregnancies are less likely to occur.

Life is all about tradeoffs and recently published research by Virginia J. Vitzthum, a senior scientist at Indiana University's Kinsey Institute for Research in Sex, Gender, and Reproduction, and professor in the IU College of Arts and Sciences' Department of Anthropology, has shown that during periods of intense labor and low food intake, rates of early pregnancy loss can more than double.

The findings, reported recently in the American Journal of Human Biology, are the first to show seasonality of early pregnancy loss in a non-industrialized population -- in this case rural Bolivian women -- and the first to demonstrate a relationship between economic activities and early pregnancy loss.

Vitzthum's research challenges the past belief that nearly all early pregnancy losses are caused by genetic defects in the embryo. Genetic defects wouldn't change with the seasons, so Vitzthum's findings show that environmental factors must also play a major role in early pregnancy losses.

"This finding applies to U.S. moms just as much as Bolivians, and it applies to psychosocial resources just as much as food supply," Vitzthum said. "As well as healthy food, pregnant women also need good working conditions and adequate social support from family, friends and workplace to keep their risks of early pregnancy losses low."

Men are affected, too. In a second research paper, also published in the "American Journal of Human Biology," Vitzthum reports a similar relationship between reproductive fitness and external influences.

"This paper also concerns the effects of limited resources, this time on male physiology," she said. "In the worst part of the year, late winter, testosterone levels are suppressed. This is particularly interesting because it had been thought that males were much less sensitive, if at all, to environmental conditions because they don't need a lot of energy for a pregnancy. The effects of poor resources on males appear to be more subtle but can still be important for their own health and well being."

Vitzthum's work has long been at the crossroads of biology and culture, focusing on how human reproductive functioning has evolved in response to different environmental conditions.

"Until recently, it was assumed that women everywhere had similar reproductive biology," she said. "We now know that women vary tremendously, and these differences affect women's health."

One example is how high hormone levels increase the risk of breast cancer and other diseases. By studying the international patterns of hormone levels and how they relate to different environmental conditions, Vitzthum hopes to learn more about which women are at the greatest risks for these diseases. Doctors could then recommend extra monitoring or screening tests for those women.


'/>"/>

Contact: Steve Chaplin
stjchap@indiana.edu
812-856-1896
Indiana University
Source:Eurekalert  

Related biology news :

1. JDRF-funded studies show regular CGM use increases diabetes control for all age groups
2. PRS And EmSense Partner To Integrate Bio-Sensory Measures In Packaging Research Studies
3. T-STAR grant funds genetic studies on shrimp and papaya and endangered cycad rescue
4. UC Davis begins $2.8 million in studies of agricultural nitrogens impacts
5. Studies shed light on collapse of coral reefs
6. Two new studies on circadian rhythms
7. New early detection studies of lung cancer in non-smokers launched today
8. Scripps studies offer new picture of Lake Tahoes earthquake potential
9. Analysis finds strong match between molecular, fossil data in evolutionary studies
10. Peregrines PS-targeting antibodies highlighted in AACR Annual Meeting studies
11. Free online toolkit provides standard measures for genome and population studies
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Studies examine how living conditions impact reproductive health
(Date:4/14/2016)... 14, 2016 BioCatch ™, ... today announced the appointment of Eyal Goldwerger ... Goldwerger,s leadership appointment comes at a time ... the deployment of its platform at several of the ... which discerns unique cognitive and physiological factors, is a ...
(Date:3/31/2016)... 2016  Genomics firm Nabsys has completed a financial ... Bready , M.D., who returned to the company in ... leadership team, including Chief Technology Officer, John Oliver ... Nurnberg and Vice President of Software and Informatics, ... Dr. Bready served as CEO of Nabsys from ...
(Date:3/22/2016)... 2016 According to ... for Consumer Industry by Type (Image, Motion, Pressure, ... & IT, Entertainment, Home Appliances, & Wearable ... 2022", published by MarketsandMarkets, the market for ... USD 26.76 Billion by 2022, at a ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 27, 2016  Liquid Biotech USA ... of a Sponsored Research Agreement with The University ... (CTCs) from cancer patients.  The funding will be ... correlate with clinical outcomes in cancer patients undergoing ... then be employed to support the design of ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... While the ... such as the Cary 5000 and the 6000i models are higher end machines that ... the height of the spectrophotometer’s light beam from the bottom of the cuvette holder. ...
(Date:6/23/2016)... , June 23, 2016   Boston Biomedical ... novel compounds designed to target cancer stemness pathways, ... been granted Orphan Drug Designation from the U.S. ... of gastric cancer, including gastroesophageal junction (GEJ) cancer. ... designed to inhibit cancer stemness pathways by targeting ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... and Mold) microbial test has received AOAC Research Institute approval 061601. , “This ... introduced last year,” stated Bob Salter, Vice President of Regulatory and Industrial Affairs. ...
Breaking Biology Technology: