Using chemical hair straighteners can make it difficult to get pregnant

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The chances of becoming pregnant may be slightly reduced with the use of chemical hair straighteners, especially if they are used frequently and for a long time or if the scalp is burned.

New research has revealed that using chemical hair straighteners was linked to a slightly decreased chance of pregnancy. According to the study, black or Hispanic people tend to use these products more frequently and start doing so when they are very young to follow the trend for straight hair, so their results “could be particularly interesting for them,” he highlighted. Che-Jung Chang, co-author of the work. In fact, around 60% of women who reported using hair straightening products in the past year said they were black.

Led by the School of Public Health, the study found that Black, Hispanic, and mixed-race people were more likely to use hair straighteners, and therefore also more likely to be exposed to the toxic chemicals. containing these products. Current and past use of hair straighteners, increased frequency and duration of use, and repeated scalp burns from these products were also associated with a lower chance of becoming pregnant.

Beauty products that affect fertility

The study findings have been published in the American Journal of Epidemiology, and add to other evidence linking reproductive problems with exposure to toxic chemicals in some beauty products and endocrine disruptors. ). An example of these substances that can negatively affect fertility are phthalates, phenols and parabens are some of the chemicals in relaxers that can contribute to reduced fertility.

“Our work underscores the importance of expanding research on the effects of beauty product use on reproductive health to promote environmental justice and increase health equity”

The researchers caution that the full set of ingredients is often not listed on the product label and more data is needed to better understand the specific mechanisms by which relaxers may affect fertility. However, the study underscores racial disparities in exposure to toxic beauty care chemicals and their adverse health consequences. Societal pressure to conform to Eurocentric beauty norms contributes to a disproportionate use of these toxic beauty products by people who do not meet the standards.

“Our work underscores the importance of expanding research on the effects of beauty product use on reproductive health to promote environmental justice and increase health equity,” says study lead author Lauren Wise, professor of epidemiology. in BUSPH.

The researchers analyzed data from surveys on various aspects of hair straightener use conducted among 11,274 women, which provided information on various aspects of hair straightener use between 2014 and 2022. The results showed that fertility rates were lower among participants who used relaxers for at least 10 years, or at least five times a year, but the study results did not show clear patterns of dose response for either association.

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