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Preterm birth risk increases for pregnant women exposed to phthalates

Date:
November 18, 2013
Source:
The JAMA Network Journals
Summary:
The odds of preterm delivery appear to increase for pregnant women exposed to phthalates, chemicals people are exposed to through contaminated food and water and in a variety of products including lotions, perfumes and deodorants, according to a study.

The odds of preterm delivery appear to increase for pregnant women exposed to phthalates, chemicals people are exposed to through contaminated food and water and in a variety of products including lotions, perfumes and deodorants, according to a study published by JAMA Pediatrics, a JAMA Network publication.

Prematurity is a leading cause of infant death and the effects of environmental exposures on preterm birth (defined as fewer than 37 weeks of gestation) are understudied. Exposure to the chemicals by women has previously been associated with disrupted thyroid hormone levels, endometriosis and breast cancer, according to the study background.

Kelly K. Ferguson, M.P.H., of the University of Michigan School of Public Health, Ann Arbor, and colleagues examined the association between phthalate exposure during pregnancy and preterm birth. The study, which was conducted at Brigham and Women's Hospital, Boston, included 130 women with preterm birth and 352 control participants with researchers analyzing urine samples during pregnancy for levels of phthalate metabolites.

The study results indicate an association between increases in some phthalate metabolite concentrations in urine during pregnancy and higher odds of preterm birth.

"Our results indicate a significant association between exposure to phthalates during pregnancy and preterm birth, which solidifies prior laboratory and epidemiologic evidence. Furthermore, as exposure to phthalates is widespread and because the prevalence of preterm birth among women in our study cohort was similar to that in the general population, our results are generalizable to women in the United States and elsewhere. These data provide strong support for taking action in the prevention or reduction of phthalate exposure during pregnancy," the study concludes.


Story Source:

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


Journal Reference:

  1. Kelly K. Ferguson, Thomas F. McElrath, John D. Meeker. Environmental Phthalate Exposure and Preterm Birth. JAMA Pediatrics, 2013; DOI: 10.1001/jamapediatrics.2013.3699

Cite This Page:

The JAMA Network Journals. "Preterm birth risk increases for pregnant women exposed to phthalates." ScienceDaily. ScienceDaily, 18 November 2013. <www.sciencedaily.com/releases/2013/11/131118162931.htm>.
The JAMA Network Journals. (2013, November 18). Preterm birth risk increases for pregnant women exposed to phthalates. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2013/11/131118162931.htm
The JAMA Network Journals. "Preterm birth risk increases for pregnant women exposed to phthalates." ScienceDaily. www.sciencedaily.com/releases/2013/11/131118162931.htm (accessed July 31, 2014).

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