substances in body care products that women use during pregnancy can affect the onset of puberty in their children. Long-term research has shown
substances in body care products that women use during pregnancy can affect the onset of puberty in their children. A long-term study established such a connection, especially between the substances diethyl phthalate and triclosan, and a few months earlier the onset of puberty in girls. This was published by the group of Kim Harley from the University of California at Berkeley in the journal “Human Reproduction”.
Hormonal substances, puberty starting earlier and earlier – these everyday objects could play a role in DPA
“This is important, because we know that puberty in girls starts several decades earlier and earlier,” said the epidemiologist in a statement to the journal. The rise in earlier onset of puberty in girls is not only a vulnerability to mental health problems, but also a long-term risk of breast and ovarian cancer, Harley points out, citing previous studies.
The current results are based on a study started in 1999, which examined the effects of pesticides on pregnant women and their offspring, especially on work in agriculture. In addition, the scientists examined the long-term effect of phthalates, parabens and phenols. It is suspected that they affect the hormonal system, especially in women.
puberty is set up to half a year earlier, and
In all, the researchers took two urine samples from each pregnant woman. A urine sample was analyzed from 338 children at the age of nine. For the next four years, the researchers observed all the children with a standard test on the onset of puberty.
The results included mothers high in mono-ethyl phthalate, a precursor to diethyl phthalate, who started writing on their daughters’ pubic hair development about six months earlier, like the researchers. A high concentration of triclosan in the mother’s urine was therefore associated with less than five Bahis Siteleri months before the first menstruation.
scientists found a link between children’s exposure and the onset of puberty: thus, high levels of methylparaben in girls’ urine were associated with earlier development of mammary glands and early first menstruation. The same was true for propyl paraben and the development of pubic hair. At high values of these substances, development began approximately four to seven months earlier. In boys, the researchers found a significant association only for propylparaben: a high concentration of the substance was associated with earlier maturation of the genitals.
President of the German Endocrinology Society, Josef Köhrle, sees the study as confirmation of previous findings from experiments on mice and rats. “Pay attention to the reference to the possible role of certain substances even in low concentrations, however, the influence of puberty,” says a doctor at the Charité Hospital in Berlin. As a rule, several substances together cause such effects in mixtures.
It is also important to note that the mothers surveyed came from low-income strata of the population and therefore barely managed to avoid better body care products, which contain fewer additives. Generally speaking, Köhrle also wants more public attention for substances that do not affect sex hormones, but do affect thyroid and stress hormones or fat metabolism.
one of the phenols that scores Triklosan, as well as parabens, are used in cosmetics and personal care products as an agent to prevent microorganisms and as a preservative. Diethyl phthalate is fixed, however, odors.
ikr / DPA Updated date: December 6, 2018, 8:02 p.m