Make-up, toothpaste and soap: What do these everyday items have in common with body care? According to a recent study, certain chemicals found in them could help girls reach puberty earlier.
The study, led by researchers from the University of California Berkeley and published earlier this week in the journal Human Reproduction, analyzed pregnant women According to a 1
During pregnancy, researchers took urine samples of mothers twice. They then took urine samples from the 338 children – 159 boys and 179 girls – when they were nine years old, and then tracked their growth and "milestones of development" from that point to the age of 13.
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The urine was tested for the presence of various chemicals such as diethyl phthalate and triclosan, the first of which is "often used as a stabilizer in fragrances and cosmetics" press release , The second is found in some types of toothpaste.
In the end, "researchers at the School of Public Health found that daughters of mothers who had higher levels of diethyl phthalate and triclosan in their bodies during pregnancy experienced puberty at a young age." They concluded. The same was not true for boys.
In particular, the concentration of the two chemicals – diethyl phthalate and triclosan – doubled each time in the mother's urine. "The development of the girls' milestones was delayed by about a month," they said.
"Girls who had higher levels of parabens in their urine at the age of 9 experienced puberty even at a young age," said the researchers. Parabens are used in cosmetics as a preservative.
The results come after a series of studies over the past two decades have shown that "girls and possibly boys have experienced puberty at an ever-younger age," researchers said, "Not reaching puberty at a young age" was having an increased risk of mental illness, breast and ovarian cancer in girls and testicular cancer in boys. "
However, this study is one of the few that has specifically analyzed how these chemicals "affect the growth of human children," the researchers said.
"We Wanted To Know How Exposure To These Chemicals Affects Certain Critical Windows Kim Harley, an adjunct professor at the School of Public Health, who worked on the study, said in a statement.
"We know that some of the things we do tackle Our bodies invade our bodies either because they go through the skin or we inhale them or inadvertently ingest them," she added. "We need to know how these chemicals affect our health."
While it is not completely certain that the girls put the girls into puberty earlier, "people should be aware that chemicals are in personal care products It may be that the hormones in our body are disturbed, "Harley said, adding that more research is needed.