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Hair straightening merchandise are related to a better threat of uterine most cancers

Hair straightening merchandise are related to a better threat of uterine most cancers

Earlier research have already linked sure hair merchandise to a better threat of hormone-sensitive cancers, together with breast and ovarian most cancers. Nonetheless, that is the primary examine to analyze a attainable affiliation with uterine most cancers.

On this massive examine, which included sufferers of assorted ethnic backgrounds, researchers assessed associations between hair product use and incident uterine most cancers in 33,947 American girls aged 35 at 74 years outdated. In questionnaires accomplished at baseline, contributors self-reported using hair merchandise within the earlier 12 months, together with hair dyes, hair straighteners or relaxers, and perms or curlers.

Throughout almost 11 years of follow-up, 378 instances of uterine most cancers had been recognized among the many contributors.

In comparison with girls who had by no means used these merchandise, those that had used smoothing merchandise within the earlier 12 months had an 80% elevated threat of uterine most cancers.

Ladies who used smoothing merchandise extra continuously, i.e. greater than 4 occasions within the earlier 12 months, had been greater than twice as prone to develop uterine most cancers as those that didn’t use these merchandise.

Using different hair merchandise, together with dyes, perms, or curlers, was not related to the event of incident uterine most cancers.

About 60% of girls who mentioned that they had used hair straightening merchandise up to now 12 months recognized as being of black ethnicity. Nonetheless, the examine confirmed no distinction within the affiliation between using smoothing merchandise and the incidence of uterine most cancers in line with ethnic origin. The authors point out that antagonistic well being results could also be higher in girls of black ethnicity because of the greater prevalence of their use.

The outcomes are just like these obtained in different research carried out by the identical staff, which demonstrated the existence of an affiliation between using hair straightening merchandise and different hormone-related cancers in girls.

Many of those merchandise include endocrine disruptors, together with bisphenol A, which intrude with the conventional functioning of the endocrine system. The authors of this new examine recommend that chemical publicity related to using hair merchandise, significantly straightening merchandise, could also be of higher concern than publicity related to different private care merchandise resulting from elevated absorption on the scalp.

“We estimate that 1.64% of girls who’ve by no means used hair straighteners could have developed uterine most cancers by age 70, however this threat could be as excessive as 4.05% amongst frequent customers. says Alexandra White, head of the Most cancers Epidemiology and Surroundings group on the US Nationwide Institute of Environmental Well being Sciences and lead writer of the brand new examine. “This doubling of the speed is worrying. Nonetheless, it is very important put this data into perspective: uterine most cancers is a comparatively uncommon most cancers. »

“To our information, that is the primary epidemiological examine to evaluate the connection between using pores and skin smoothing merchandise and uterine most cancers,” she explains. “Additional research are wanted to verify these findings in several populations, to find out whether or not hair merchandise contribute to well being disparities in uterine most cancers, and to determine particular substances that will enhance most cancers threat. in girls. »

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