According to US studies, girls who are exposed to chemicals commonly found in toothpaste, cosmetics, soaps, and other personal care products before birth may reach puberty earlier than their unexposed peers. these chemicals in the womb.
The researchers followed 338 children from birth to adolescence. They tested the mother's urine during pregnancy and questioned them about possible chemical exposure, then tested the children's urine for chemical exposure at age 9 and examined them for signs of puberty every nine months from age 9 to 13.
In the article estet-portal.com you can read the results of the study in detail.
What is the danger of personal hygiene products for the fetus
Data were obtained from the Center for Maternal and Child Health Assessment of Salinas (CHAMACOS) longitudinal cohort study of 338 children in the Salinas Valley, California, from birth to adolescence.
Pregnant women were enrolled in 1999-2000. The mothers were mostly Hispanic, living below the federal poverty line and without a high school diploma.
Urine concentrations of three phthalate metabolites (monoethyl phthalate, mono-n-butyl phthalate and monoisobutyl phthalate), methyl and propyl paraben and four other phenols (triclosan, benzophenone-3, 2,4- and 2,5-dichlorophenol) were measured, collected from mothers during pregnancy and from children aged 9.
Triclosan is added to antibacterial soap and toothpaste.
Puberty was assessed every 9 months in 179 girls and 159 boys from 9 to 13 years of age using the Tanner Clinical Scale.
Watch the most interesting videos on our channel in Youtube
What causes uncontrolled use of personal hygiene products
Girls have been observed to have earlier onset of pubic hair development (mean age — 9.2 years) with the presence of monoethyl phthalate in maternal urine collected during pregnancy.
Diethyl phthalate is often used in perfumery.
Earlier menarche occurred in girls (mean age — 10.3 years) whose mothers were found to have triclosan and 2,4-dichlorophenol in urine collected during pregnancy.
The investigators also observed earlier breast development, pubic hair development, and menarche in the presence of methylparaben; earlier menarche in the presence of propylparaben.
In boys, only earlier development of the genitals was found in the presence of propylparaben in the mother's urine collected during pregnancy.
Pregnant women need to carefully select personal hygiene products
The study found that for every doubling of phthalates in mothers' urine, their daughters developed pubic hair an average of 1.3 months earlier. And with every doubling of triclosan concentrations in mothers' urine, the girls started menstruating a month earlier.
The timing of puberty in boys did not appear to be affected by prenatal exposure to these chemicals.
These chemicals in personal care products can interfere with the concentration of hormones (such as estrogen).
This study contributes to a growing literature that suggests that exposure to certain endocrine-disrupting chemicals during the prenatal period may influence the timing of puberty in children.
Thank you for staying with estet-portal.com. Read other interesting articles in the "Cosmetology" section. You may be interested in To Be or Not To Be: Botulinum Toxin Injections During Pregnancy
Share:
Add a comment