Featured Research

from universities, journals, and other organizations

Men With Higher Levels Of PCBs More Likely To Father Boys

Date:
January 29, 2002
Source:
Michigan State University
Summary:
A Michigan State University study indicating that men with higher levels of PCBs in their bodies are more likely to father boys than girls is more evidence of the effects environmental contaminants can have on the human body.

A Michigan State University study indicating that men with higher levels of PCBs in their bodies are more likely to father boys than girls is more evidence of the effects environmental contaminants can have on the human body.

The study, using data from three separate studies in which PCB levels were measured in the bodies of men who ate fish taken from Lake Michigan, found that of the 208 children born to those men, more than 57 percent were boys.

The paper was published in the recent issue of the Journal of Occupational and Environmental Medicine.

"We do not wish to say that having a baby boy is bad, it's just that there were more of them," said Wilfried Karmaus, MSU associate professor of epidemiology, who directed the study. "A change in the proportion of boys to girls, however, indicates that environmental contaminants may play a role in human reproduction."

PCBs are among a number of environmental contaminants that have plagued the Great Lakes for years. They can come from any number of sources, including hydraulic fluids and oils, electrical capacitors and transformers, and a by-product of paper mills that dot the shoreline.

Among the potential dangers of PCBs: disruption of the body's endocrine system and a possible carcinogen.

In this study, Karmaus and colleagues restricted their research to children born after 1963 and to families in which PCB levels were detectable in both fathers and mothers. This was a total of 208 children from 101 families.

They found that men with PCB concentrations of at least 8.1 micrograms per liter of blood were more likely to father boys.

"However," Karmaus said, "we did not detect that the PCB levels of mothers affected the number of boys or girls."

Also participating in the study was Suiying Huang, a former graduate student in MSU's Department of Epidemiology, and Lorraine Cameron of the Michigan Department of Community Health.

The research was funded by a grant from the Agency for Toxic Substances and Disease Registry.


Story Source:

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


Cite This Page:

Michigan State University. "Men With Higher Levels Of PCBs More Likely To Father Boys." ScienceDaily. ScienceDaily, 29 January 2002. <www.sciencedaily.com/releases/2002/01/020129073314.htm>.
Michigan State University. (2002, January 29). Men With Higher Levels Of PCBs More Likely To Father Boys. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2002/01/020129073314.htm
Michigan State University. "Men With Higher Levels Of PCBs More Likely To Father Boys." ScienceDaily. www.sciencedaily.com/releases/2002/01/020129073314.htm (accessed July 23, 2014).

Share This




More Health & Medicine News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Courts Conflicted Over Healthcare Law

Courts Conflicted Over Healthcare Law

AP (July 22, 2014) Two federal appeals courts issued conflicting rulings Tuesday on the legality of the federally-run healthcare exchange that operates in 36 states. (July 22) Video provided by AP
Powered by NewsLook.com
Why Do People Believe We Only Use 10 Percent Of Our Brains?

Why Do People Believe We Only Use 10 Percent Of Our Brains?

Newsy (July 22, 2014) The new sci-fi thriller "Lucy" is making people question whether we really use all our brainpower. But, as scientists have insisted for years, we do. Video provided by Newsy
Powered by NewsLook.com
Scientists Find New Way To Make Human Platelets

Scientists Find New Way To Make Human Platelets

Newsy (July 22, 2014) Boston scientists have discovered a new way to create fully functioning human platelets using a bioreactor and human stem cells. Video provided by Newsy
Powered by NewsLook.com
Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

TheStreet (July 21, 2014) New research shows Gilead Science's drug Sovaldi helps in curing hepatitis C in those who suffer from HIV. In a medical study, the combination of Gilead's Hep C drug with anti-viral drug Ribavirin cured 76% of HIV-positive patients suffering from the most common hepatitis C strain. Hepatitis C and related complications have been a top cause of death in HIV-positive patients. Typical medication used to treat the disease, including interferon proteins, tended to react badly with HIV drugs. However, Sovaldi's %1,000-a-pill price tag could limit the number of patients able to access the treatment. TheStreet's Keris Lahiff reports from New York. Video provided by TheStreet
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