Navigation Links
Exposure to Common Chemicals May Affect Thyroid Function
Date:7/14/2011

THURSDAY, July 14 (HealthDay News) -- Chemicals called phthalates and bisphenol-A (BPA) that are found in solvents, plastics and numerous household products may alter levels of thyroid hormones in the body, according to a new study.

Thyroid hormones play a role in many critical bodily functions, including reproduction and metabolism.

Researchers from the University of Michigan School of Public Health used data from the U.S. National Health and Nutrition Examination Survey to compare thyroid levels and traces of phthalates and BPA in urine samples of 1,346 adults and 329 teenagers. Their findings confirmed previous research linking BPA -- used in certain plastic water bottles and the linings of canned foods -- with disruptions in thyroid hormone levels, they said.

Overall, higher concentrations of the chemicals had an inverse impact on thyroid levels, said study lead author John Meeker, an assistant professor, in a university news release. The greater the exposure to phthalates and BPA, the lower the thyroid hormone levels.

The strongest link occurred with exposure to DEHP, a phthalate commonly used as a plasticizer, which people come into contact with through diet.

In the cases of DEHP ingestion, urine samples showed that the greatest exposure was associated with as much as a 10 percent drop in thyroid hormones.

"This seems like a subtle difference," said Meeker, "but if you think about the entire population being exposed at this level you'd see many more thyroid related effects in people."

The authors concluded that additional research is needed. In other ongoing studies, they are assessing the chemicals' potential effects on pregnancy outcomes and child development.

Developing fetuses and children may be particularly vulnerable to disruptions in thyroid hormone levels associated with exposure to these and other environmental chemicals, Meeker said.

The researchers, acknowledging some limitations of their study, said their work could be improved by following people over time and collecting several urine samples, since these chemicals metabolize quickly and one single sample may not represent the true chemical exposure.

The findings were published online July 11 in the journal Environmental Health Perspectives.

More information

The U.S. Department of Health and Human Services provides more information on the safety of phthalates and BPA.

-- Mary Elizabeth Dallas

SOURCE: University of Michigan, news release, July 11, 2011


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Fetal Exposure to Common Epilepsy Drugs May Harm Kids IQ: FDA
2. On-the-Job Lead Exposures Falling, But Still a Problem: CDC
3. Exposure to parental stress increases pollution-related lung damage in children
4. Early Chemical Exposures May Affect Breast Health: Report
5. Genetic mutation linked to asbestos exposure
6. Early exposure to pets does not increase childrens risk of allergies
7. New study suggests link between estrogen exposure, high blood pressure
8. CDC Warns Against Exposure to Mad Cow-Like Brain Diseases
9. Moms Exposure to Plastics Chemical Tied to Babys Wheeze
10. BPA exposure may be associated with wheezing in children
11. Pesticide Exposure in Pregnancy Linked to Lower IQ in Kids
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Exposure to Common Chemicals May Affect Thyroid Function
(Date:3/28/2017)... NEW YORK (PRWEB) , ... March 28, 2017 ... ... development, NTX Technology™, is the first technology to directly address the resolution to ... Organization. NTX Technology™ is a patented compound of FDA and TTB approved ingredients ...
(Date:3/28/2017)... ... ... Dr. Isabella Wentz, PharmD, FASCP, one of the leading thyroid experts of ... Dr. Wentz talked about journey and research recently on a blog and discussed some ... only solution to deal with thyroid disease. , Dr. Wentz completed her graduation ...
(Date:3/28/2017)... ... March 28, 2017 , ... Alert Sentry Group LLC., a ... Personal Emergency Response Systems), the iSAFE and the iSAFE Plus. These iSAFE products are ... of their kind, the iSAFE and iSAFE Plus offer direct GPS Location and two-way ...
(Date:3/28/2017)... , ... March 28, 2017 , ... ... instruments are critical to ensuring high-quality results and maintaining GMP and USP compliance. ... Laboratory Instruments in accordance with GMP requirements " these requirements are explained. ...
(Date:3/28/2017)... ... March 28, 2017 , ... ... corrosive ions found in power plant water and steam. , Chlorides and sulfates ... and boilers, leading to extensive maintenance and unplanned shutdowns. Monitoring these ions at ...
Breaking Medicine News(10 mins):
(Date:3/28/2017)... , March 28, 2017  Medeon Biodesign, Inc., ... company, is pleased to announce that the Company ... of Panther Orthopedics, Inc., a San ... fixation solutions for orthopedic extremity applications.  ... expand rapidly, primarily due to procedure volume growth, ...
(Date:3/28/2017)... LONDON , March 28, 2017  "US ... insight on the various indicators and trend analysis ... generics drugs in mainstream pharmaceutical market in US. ... responsible for the growth on cancer generics drugs ... resulted in saving of billions of dollars for ...
(Date:3/28/2017)... 28, 2017  Orexigen Therapeutics, Inc. (Nasdaq: ... the fourth quarter and year ended December 31, 2016. ... transformational progress for Orexigen, beginning with the re-acquisition of ... early March, the team at Orexigen demonstrated remarkable focus, ... reshaped and strengthened our Company while rewarding us full ...
Breaking Medicine Technology: