The effect of pre-pregnancy hair dye exposure on infant birth weight: a nested case-control study

Jiang, Chao; Hou, Qingzhi; Huang, Yaling; Ye, Juan; Qin, Xiaolian; Wen, Ming‐Shien; Wang, Qiuyan; Jiang, Yonghua; Zhang, Haiying; Li, Mujun; Mo, Zengnan; Yang, Xiaobo

doi:10.1186/s12884-018-1782-5

Cited by 16 publications

(9 citation statements)

References 53 publications

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“…16 In a separate study, ever use of dark hair dyes during pregnancy was associated with higher odds of delivering a low-birth weight infant among 315 Chinese mother-infant pairs. 17 Observed associations between hair products and health outcomes may also be due to behavior change related to hair product use. For instance, products only result in temporary hair maintenance and styling; the altered hair can readily revert to an undesired style or state due to environmental humidity or natural biological processes like sweating from physical activity.…”

Section: Introductionmentioning

confidence: 99%

Chemical/straightening and other hair product usage during childhood, adolescence, and adulthood among African-American women: potential implications for health

Gaston

James‐Todd

Harmon

et al. 2019

J Expo Sci Environ Epidemiol

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Few studies have characterized life course hair product usage beyond ever/never. We investigated hair product use from childhood to adulthood, usage patterns in adulthood, and socioeconomic status (SES) correlates among African-American (AA) women. Using self-reported data from 1,555 AA women enrolled in the Study of Environment, Lifestyle, and Fibroids (2010-2018), we estimated the usage frequency of chemical relaxer/straightener (≥twice/year, once/year, rarely/ never) and leave-in/leave-on conditioner (≥once/week, 1-3 times/month, rarely/never) during Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:

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Section: Introductionmentioning

confidence: 99%

Chemical/straightening and other hair product usage during childhood, adolescence, and adulthood among African-American women: potential implications for health

Gaston

James‐Todd

Harmon

et al. 2019

J Expo Sci Environ Epidemiol

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“…Our results showed that LBW is more frequent in women who dyed their hair in the preconception period or third trimester. Jiang et al also showed an association between pre-pregnancy hair dye use and increased risk of LBW [4]. Other studies investigated LBW in the hairdressers who have occupational exposure to the hair dye chemicals.…”

Section: Discussionmentioning

confidence: 99%

“…It is not clear whether hair color would affect the fetus or not. Studies showed a possible association between hair coloring during pregnancy, and low birth weight, neuroblastoma, and leukemia in the offspring [4][5][6][7]. There is a report for increased neonatal abnormalities in mothers who used chlorinated solvents and glycol ether for hair dyeing during pregnancy.…”

Section: Introductionmentioning

confidence: 99%

The Association of Hair Coloring During Pregnancy with Pregnancy and Neonate Outcomes: A Cross-Sectional Study

Shishavan

Sayyah-Melli

Rashid

et al. 2020

Preprint

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Background: Hair colorant use has spread globally and rapidly in recent years. Concerns have arisen about the safety of hair dyes usage during pregnancy. The primary goal of this study was to examine the association between hair coloring during pregnancy, intrapartum, and neonatal outcomes.Methods: This explorative cross-sectional study was carried out at Talegani Teaching Hospital of Tabriz University of Medical Sciences from Jan 2017 to Dec 2019. Three trained midwives inquired mothers about the hair coloring history on the admission to the labor room and recorded intrapartum, and neonatal outcomes. Chi-Square test of independence with post hoc tests and Logistic regression analysis were used for data analysis. Odds Ratios with a 95% confidence interval and contributing effect sizes were reported. The significance level was set at α ≤ 0.05Results: We studied 2040 women aged 14 to 48 years. Most of the participants (75.24%) dyed their hair during pregnancy, and the majority (62.67%) colored their hair in the third trimester. There was no statistically significant association between hair coloring and neonate 1-minute (p=0.23) and 5-minute Apgar score (p=0.99). The logistic regression model did not confirm a rise in overall neonatal complications (NC) associated with hair coloring at any time during the pregnancy (OR:0.027 p<0.001). Higher rates of Low birth weight (LBW) were seen among those dyed their hair in the preconception period and third trimester compared to the woman who colored their hair in the first and second trimester (p<0.001).Conclusions: We observed associations between hair coloring and LBW, but there were no increased odds for NC. The evidence for recommending hair dye safety during pregnancy is still limited. Perinatal health professionals should advise their patients on possible adverse outcomes and inform them about the uncertainties about hair dyes.

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“…For example, hair oils are typically used more frequently and are not rinsed out as quickly compared to dyes and relaxers [ 15 ]. In a nested case–control study of Chinese mother-infant pairs ( n = 210 controls, n = 105 cases), use of hair dyes prior to conception was associated with greater odds of delivering a low-birth weight infant (odds ratio (OR): 1.71; 95% CI: 1.01, 2.92) [ 32 ]. However, data on dye use during pregnancy were not collected.…”

Section: Discussionmentioning

confidence: 99%

Endocrine disrupting chemical-associated hair product use during pregnancy and gestational age at delivery: a pilot study

et al. 2021

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Background Prenatal endocrine disrupting chemical (EDC) exposure has been associated with increased risk of preterm birth. Non-Hispanic Black women have higher incidence of preterm birth compared to other racial/ethnic groups and may be disproportionately exposed to EDCs through EDC-containing hair products. However, research on the use of EDC-associated hair products during pregnancy and risk of preterm birth is lacking. Therefore, the objective of this pilot study was to estimate associations of prenatal hair product use with gestational age at delivery in a Boston, Massachusetts area pregnancy cohort. Methods The study population consisted of a subset of participants enrolled in the Environmental Reproductive and Glucose Outcomes (ERGO) Study between 2018 and 2020. We collected self-reported data on demographics and hair product use using a previously validated questionnaire at four prenatal visits (median: 12, 19, 26, 36 weeks’ gestation) and abstracted gestational age at delivery from medical records. We compared gestational age and hair product use by race/ethnicity and used linear regression to estimate covariate-adjusted associations of product use and frequency of use at each study visit with gestational age at delivery. Primary models were adjusted for maternal age at enrollment and delivery method. Results Of the 154 study participants, 7% delivered preterm. Non-Hispanic Black participants had lower mean gestational age at delivery compared to non-Hispanic White participants (38.2 vs. 39.2 weeks) and were more likely to report ever and more frequent use of hair products. In regression models, participants reporting daily use of hair oils at visit 4 had lower mean gestational age at delivery compared to non-users (β: -8.3 days; 95% confidence interval: -14.9, -1.6). We did not find evidence of associations at earlier visits or with other products. Conclusions Frequent use of hair oils during late pregnancy may be associated with shorter gestational duration. As hair oils are more commonly used by non-Hispanic Black women and represent potentially modifiable EDC exposure sources, this may have important implications for the known racial disparity in preterm birth.

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The effect of pre-pregnancy hair dye exposure on infant birth weight: a nested case-control study

Cited by 16 publications

References 53 publications

Chemical/straightening and other hair product usage during childhood, adolescence, and adulthood among African-American women: potential implications for health

Chemical/straightening and other hair product usage during childhood, adolescence, and adulthood among African-American women: potential implications for health

The Association of Hair Coloring During Pregnancy with Pregnancy and Neonate Outcomes: A Cross-Sectional Study

Endocrine disrupting chemical-associated hair product use during pregnancy and gestational age at delivery: a pilot study

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