Article

The risk of congenital malformations and other neonatal and maternal health outcomes among licensed cosmetologists.

New York State Department of Health, Center for Environmental Health, Troy, New York 12180, USA.
American Journal of Perinatology (impact factor: 1.32). 05/2009; 26(9):625-31. DOI:10.1055/s-0029-1220787 pp.625-31
Source: PubMed

ABSTRACT This study sought to determine if cosmetologists in New York State (NYS) have a higher risk of complications of labor/delivery or congenital malformations and poor neonatal health indicators among their offspring compared with Realtors and the general population. This retrospective cohort study matched licensing records for cosmetologists and realtors to birth records and the NYS Congenital Malformations Registry from 1997 to 2003. A random sample of NYS birth certificates, frequency matched to cosmetologists on year of child's birth, mother's ethnicity, and education, was also formed. Outcomes include malformations of each major organ system, neonatal health indicators, and complications of labor/delivery. Multivariate logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs), controlling for potential confounders. Compared with Realtors, cosmetologists had an increased risk of several maternal and neonatal health indicators, including postpartum hemorrhage (OR = 2.12; 95% CI 1.26, 3.58), failure to progress (OR = 1.31; 95% CI 1.12, 1.54), and newborn intubation (OR = 2.34; 95% CI 1.21, 4.51), among others. We did not observe an increased risk of congenital malformations among cosmetologists' offspring. Working as a cosmetologist was positively associated with several adverse maternal perinatal and neonatal health indicators but was not associated with congenital malformations in this study. These results are useful for hypothesis generating.

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    Article: Fertility disorders and pregnancy complications in hairdressers - a systematic review.
    Claudia Peters, Melanie Harling, Madeleine Dulon, Anja Schablon, José Torres Costa, Albert Nienhaus
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    ABSTRACT: Hairdressers often come into contact with various chemical substances which can be found in hair care products for washing, dyeing, bleaching, styling, spraying and perming. This exposure can impair health and may be present as skin and respiratory diseases. Effects on reproduction have long been discussed in the literature. A systematic review has been prepared in which publications from 1990 to 2010 were considered in order to specifically investigate the effects on fertility and pregnancy. The results of the studies were summarised separately in accordance with the type of study and the examined events. A total of 2 reviews and 26 original studies on fertility disorders and pregnancy complications in hairdressers were found in the relevant databases, as well as through hand searches of reference lists. Nineteen different outcomes concerning fertility and pregnancy are analysed in the 26 original studies. Most studies looked into malformation (n = 7), particularly orofacial cleft. Two of them found statistically significant increased risks compared to five that did not. Small for gestational age (SGA), low birth weight (LBW) and spontaneous abortions were frequently investigated but found different results. Taken together the studies are inconsistent, so that no clear statements on an association between the exposure as a hairdresser and the effect on reproduction are possible. The different authors describe increased risks of infertility, congenital malformations, SGA, LBW, cancer in childhood, as well as effects from single substances. On the basis of the identified epidemiological studies, fertility disorders and pregnancy complications in hairdressers cannot be excluded. Although the evidence for these risks is low, further studies on reproductive risks in hairdressers should be performed as there is a high public health interest.
    Journal of Occupational Medicine and Toxicology 01/2010; 5:24.
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Keywords

95% confidence intervals
 
adverse maternal perinatal
 
birth records
 
calculate odds ratios
 
child's birth
 
congenital malformations
 
cosmetologists
 
cosmetologists' offspring
 
general population
 
licensing records
 
major organ system
 
Multivariate logistic regression
 
neonatal health indicators
 
New York State
 
NYS birth certificates
 
NYS Congenital Malformations Registry
 
poor neonatal health indicators
 
postpartum hemorrhage
 
random sample
 
retrospective cohort study
 

Michele Herdt-Losavio