multitude who use chemical hairsbreadth straighteners are at an increase danger of uterine cancer , harmonize to a fresh subject field from researchers at the National Institutes of Health . The results are particularly concern for Black women , the author mention , due to their gamey and more longsighted - term function of such products .

“ To our knowledge this is the first epidemiological study that examine the family relationship between straightener use and uterine cancer , ” said Alexandra White , mind of the National Institute of Environmental Health Sciences ( NIEHS ) Environment and Cancer Epidemiology mathematical group and run author on the fresh study , in astatement .

But , she added , “ more research is needed to corroborate these findings in unlike populations , to determine if hair ware contribute to health disparity in uterine cancer , and to key out the specific chemical substance that may be increasing the risk of Cancer the Crab in cleaning woman . ”

The investigator used data from theSister Study – a project led by the NIEHS take aim to learn how environment and genes may affect the chances of get breast cancer and other conditions . This gave them access to a sample tens of grand of masses in size of it . They followed more than 33,000 of these adult female for more than a decade , during which clock time 378 cases of uterine cancer were diagnosed .

But not every participant had the same risk , the subject area divulge . “ We approximate that 1.64 percent of fair sex who never used pilus straightener would go on to acquire uterine Cancer the Crab by the old age of 70 ” explained White . But for frequent users – defined in the study as those who used straightening products at least four times per class – “ that endangerment conk up to 4.05 percent , ” she said .

While the study did n’t gather info on which individual brands or ingredients may be behind this trend , previous studieshave found several chemicals in straightening product that can disrupt the endocrine gland organization – an effect that haspreviously been linkedto higher rates of endometrial Crab . straighten out agents havebeen linkedto higher rates of breast and ovarian cancer , too , and most disturbingly , such ingredients arenot always listedon products – even those marketed to nestling .

The study also bring to analready massivebody of evidenceshowingthat , when it do toracial disparity in health outcomes , it isracism , not race , which is most to blame . For many Black women , change their hair to fit more closely with a white beauty ideal is “ a societal and economic necessity ” , write Chanel Donaldson in theFall 2012 issueof New York University ’s Applied Psychology Opus ; it “ reflects a continued effort on the part of mordant women to imbibe into ‘ normal ’ society by go in and substantiate a non - forbidding image . ”

And there can be actual and devastating consequences for those who reject these wordless knockout rules . study as late as 2020 have shown that fatal womenrisk being perceivedas less professional or competent if they fag out their hair in innate , non - straightened styles . In 2016 , the Eleventh Circuit ruled that any natural Black hair style other than the afro couldlegally be bannedin professional mount . This discrimination set forth early : kids as youthful as six years old have even beenexcluded from family or additional - curricularsfor wearing style that do n’t involve artificial straightening to achieve .

All of which puts grim multitude , and Black women in peculiar , at a dramatically increase risk from their everyday hair’s-breadth routines . “ Sixty percent of the participant who reported using straightener were Black women , ” Chandra Jackson , a participant in the NIEHS Earl Stadtman Investigators program , who co - author the study , toldNBC News . “ The bottom line is that the exposure effect looks like higher among Black women . ”

But while the addition in risk for regular users of straightening products is “ notable ” , White admonish against taking the result out of context .

“ This doubling charge per unit is concerning , ” she said . “ However … uterine cancer is [ still ] a relatively rare character of Crab . ”

The study was bring out in theJournal of the National Cancer Institute .