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Chemical Exposure Can Hasten Puberty in Girls.
A chemical accident in Michigan in the early 1970s has resulted in early menarche among girls who were exposed to polybrominated biphenyls, either in utero or through their mother's breast milk.
More than 4,000 Michigan residents were exposed to polybrominated biphenyls (PBBs) through meat and dairy products when the chemicals were accidentally mixed with animal feed in 1973 (Epidemiology 11[6]:641-47, 2000).
This is the second study to associate early puberty with exposure to a specific chemical.
In the current study, scientists at Emory University, the Centers for Disease Control and Prevention, and the Michigan Department of Community Health contacted females aged 5-24 years whose mothers' PBB exposure was documented in a Michigan PBB exposure registry.
Girls with the highest exposure to PBBs--a chemical used in fire retardants--developed pubic hair and began menstruating on average before age 12.
The authors found no influence of the chemical on the girls' breast development.
The amount of exposure to PBBs did make a difference. Girls with the most exposure started menstruating about a year earlier than less-exposed girls--at age 11.6 years vs. 12.7 years.
- Polybrominated Biphenyls (PBBs)
- Encyclopedia entry from: The Gale Encyclopedia of Science January 1, 2008 700+ words
Polybrominated Biphenyls (PBBs) Polybrominated biphenyls (or PBBs) are chemicals used to make plastics flame retardant...cattle and poultry they also became contaminated with PBBs. Many of the animals developed minor symptoms such as...
- Duration of breast-feeding and PBBs. (Correspondence).
- Magazine article from: Environmental Health Perspectives Rogan, Walter J. Weil, William B. September 1, 2002 700+ words
...from interviews in 1997 or later with women who were exposed to PBBs in the mid-1970s and who had a child since then. In a study...children. J Pediatr 98:47-51 (1981). (3.) Finberg. PBBs: the ladies' milk is not for burning. J Pediatr 90:511...
- Synthetech Expands PBBs.(peptide building blocks)
- Magazine article from: Chemical Market Reporter June 1, 1998 700+ words
SYNTHETECH INC. announced a $5 million second phase expansion of its recently completed manufacturing facility for its peptide building blocks (PBBs) product line. The expansion includes installation of four additional multipurpose reactor systems to two more bays.
- Synthetech Expands PBBs
- Magazine article from: Chemical Market Reporter June 1, 1998 700+ words
SYNTHETECH INC. announced a $5 million second phase expansion of its recently completed manufacturing facility for its peptide building blocks (PBBs) product line. The expansion includes installation of four additional multipurpose reactor systems to two more bays.
- Breast-feeding and PBBs: response to Rogan and Weil. (Correspondence).
- Magazine article from: Environmental Health Perspectives Marcus, Michele Cheslack-Postava, Keely Tolbert, Paige E. Hertzberg, Vicki Small, Chanley Blanck, Heidi Michels Henderson, Alden Rubin, Carol Thomas, Ann September 1, 2002 700+ words
...interviewed for the National Survey of Family Growth (3). It is possible that women who had a breast milk sample tested for PBBs had already decided to breast-feed their infants. In our study (1) we compared breast-feeding among women in the PBB cohort...
- PBB Chemical Exposure Hastens Puberty in Girls.(Brief Article)
- Magazine article from: Family Practice News JOHNSON, KATE February 1, 2001 700+ words
...PBB exposure registry. Girls with the highest exposure to PBBs--a chemical used in fire...influence of the chemical on the girls' breast development. The amount of exposure to PBBs did make a difference. Girls with the most exposure started...
- Girls just wanna have fun, moms just wanna talk; When puberty hits, experts say...
- Newspaper article from: The Toronto Star (Toronto, Ontario) August 5, 2009 700+ words
...move that one up. Girls as young as 8 are...By the time a girl is 8 years old, she...of about 11,000 girls surveyed by KidsHealth...focused mostly on the "PBBs - periods, bras and...about weight since girls gain rapidly with...called Smart Talking A Girl's Guide for You...
- Chemical Contamination Linked to Early Puberty.(polybrominated biphenyl)(Brief...
- Newspaper article from: Medical Letter on the CDC & FDA December 31, 2000 700+ words
...years for less-exposed girls. "This study lends...postnatal exposure to PBBs," said Michele Marcus...current study, the girls who were most highly exposed to PBBs had pubic hair at an...than less-exposed girls. However there were...
