Women exposed to pollutants in domestic products less likely to have boysJuly 16th, 2008 - 4:04 pm ICT by ANI
Washington, July 16 (ANI): Women exposed to higher levels of environmental pollutants present in domestic products are less likely to give birth to male children, according to a new study.
During the study, the researchers found that among women from the San Francisco Bay Area, those exposed to higher levels of polychlorinated biphenyls (PCBs- a banned group of pollutants) during the 50s and 60s, were significantly more likely to give birth to female children.
PCBs are persistent organic pollutants identified worldwide as human blood and breast milk contaminants. They were widely used in industry as cooling and insulating fluids for electrical equipment, as well as in construction and domestic products such as varnishes and caulks
They also affect immune, reproductive, nervous, and endocrine systems.
The researchers analysed the levels of PCBs in blood taken from pregnant women during a Bay Area study in the 1960s and found that for every one microgram of PCBs per litre of serum, the chance of having a male child fell by 7pct.
“The women most exposed to PCBs were 33% less likely to give birth to male children than the women least exposed,” said Irva Hertz-Picciotto, the lead author of the study.
“These findings suggest that high maternal PCB concentrations may either favour fertilization by female sperm or result in greater male embryonic or fetal losses.
The association could be due to contaminants, PCB metabolites or the PCBs themselves,” she added.
A study is published today in BioMed Central’’s open access journal Environmental Health. (ANI)
- Pollution a reason for birth of girl children? - Jul 16, 2008
- Exposure to PCBs worsens asthma symptoms - Sep 02, 2012
- Childhood exposure to polychlorinated biphenyls lowers immune response to vaccination - Jun 21, 2010
- Toxic chemicals found in pregnant women: US study - Jan 15, 2011
- Major toxic compounds detected on America's highest mountain - Dec 08, 2009
- Mercury levels 'similar in kids with, without autism' - Oct 20, 2009
- UNIDO signs 14 m dollar GEF-funded Project for phase-out of PCB pollutants - Feb 04, 2010
- Household chemicals 'causing cancer, reducing fertility' - May 11, 2012
- Deadly pesticides found inside marine mammals - May 21, 2009
- Exposure to nuke radiation leads to more male births - May 29, 2011
- Prenatal exposure to pollutants linked to behavioural problems in children - Apr 13, 2011
- Chinese toxic ship arrives in Bangladesh - Sep 20, 2011
- Levels of environmental contaminants in mums' body drop during breast-feeding - Jan 22, 2011
- Pollution ups odds of premature birth by 30 percent - Oct 07, 2011
- Early period leads to baby girls: Study - May 02, 2011
Tags: biomed central, breast milk, electrical equipment, endocrine systems, environmental pollutants, fertilization, fetal losses, hertz, human blood, irva, litre, metabolites, microgram, open access, persistent organic pollutants, polychlorinated biphenyls pcbs, pregnant women, san francisco bay, san francisco bay area, varnishes