The brand new examine “matches in nicely” with that total physique of analysis, mentioned Alexis Temkin, a toxicologist with the nonprofit Environmental Working Group in Washington, D.C.
It hyperlinks hair product use to hormonal variations which can be according to a number of the well being results which were tied to such merchandise, in response to Temkin.
The findings — printed within the journal Environmental Research — are primarily based on 1,070 pregnant girls in Puerto Rico who made as much as three examine visits over the course of their being pregnant. They accomplished questionnaires on private product use and gave blood samples to have their hormone ranges measured.
General, ranges of estrogen, progesterone and testosterone have been decrease amongst girls who reported utilizing “different” hair merchandise, versus nonusers. That class included dyes, straighteners, bleaches and mousse, however not shampoo, conditioner, hair spray or hair gel.
It is not clear, in response to Rivera-Nunez, whether or not girls who use these hair merchandise could be uncovered to explicit chemical substances which can be problematic, or have the next stage of publicity to endocrine disruptors.
Past that, there are lots of elements that may sway being pregnant hormones. The researchers factored within the variables that they may — equivalent to girls’s pre-pregnancy physique weight, revenue and schooling ranges, in addition to their smoking and ingesting historical past.
However it’s not attainable to account for all the pieces, Rivera-Nunez mentioned.
For now, she really helpful that girls who’re pregnant or planning a being pregnant learn labels and pay attention to what they’re placing on their our bodies. On the similar, she acknowledged that these labels aren’t essentially consumer-friendly.
“The dearth of excellent labeling is an issue,” Rivera-Nunez mentioned.
Temkin suggested looking for the phrase “perfume” — a harmless-sounding time period that really features a broad vary of undisclosed chemical substances, a few of which can be endocrine disruptors.
Extra info
The Environmental Working Group has extra on private care products’ ingredients.
SOURCES: Zorimar Rivera-Nunez, PhD, MS, assistant professor, biostatistics and epidemiology, Rutgers Faculty of Public Well being, Piscataway, N.J.; Alexis Temkin, PhD, toxicologist, Environmental Working Group, Washington, D.C.; Environmental Analysis, Nov. 17, 2021, on-line
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