Household chemicals linked to early puberty in girls

06 Décembre, 2018, 16:18 | Auteur: Yves Courtet
  • Creative abstract healthcare body care and cosmetics concept macro view of set of various plastic metal and glass bottles and containers on shelf in bathroom. See also

Chemicals found in perfume and body lotion may make girls go through puberty early.

The CHAMACOS study recruited pregnant women living in the farm-working, primarily Latino communities of Central California's Salinas Valley between 1999 and 2000.

The association was found by looking at levels of the chemicals in girls aged 9 to 13, and by looking at the levels found in their mothers during pregnancy. However it was only girls, and not boys, who entered puberty earlier when exposed to certain chemicals.

Dr Kim Harley, associate professor in public health at the University of California, who led the study, said: "We found evidence that some chemicals widely used in personal care products are associated with earlier puberty in girls".

A chemical called diethyl phthalate, used in perfumes and cosmetics and only banned by the European Union in significant concentrations this year, could lead girls to start puberty months earlier than the average, research found.

"Mothers who had higher levels of two chemicals in their bodies during pregnancy - diethyl phthalate, which is used in fragrance, and triclosan, which is an antibacterial agent in certain soaps and toothpaste - had daughters who entered puberty earlier", she said.

Although Doctor Harley has acknowledged other elements can play its part on early puberty, she fears the impact this will have on children's mental health.

The research, published in the journal Human Reproduction, also found links with propyl paraben - which is used in perfumes - and chlorine-containing chemicals, which appear in cosmetics in the U.S. but are only for industrial use in Britain.

Phthalates, parabens and triclosan are not banned for use in personal care products, and there isn't solid evidence yet that they cause health effects in humans, Harley said by email.

9-Year-Old Leads The Charge In Changing ‘Illegal Snowballs’ Law
In this Thursday, Nov. 29, 2018, photograph, 9-year-old Dane Best poses in the council chambers in Severance, Colo . The last time it snowed, Dane said he and his friends looked around for police and joked about breaking the law.

Bruno Lemaire promet de l'appliquer en France dès 2019 — Taxe GAFA
La France, à l'origine de cette proposition, espérait à l'origine voir cette directive approuvée d'ici la fin de l'année. Contre 24% pour les entreprises classiques.

Des nouvelles de Neven Subotic — ASSE
De son côté, l'ex-international français Mathieu Debuchy s'est blessé tout seul à la cheville gauche. À noter que Subotic avait été remplacé par le jeune William Saliba (17 ans) qui avait concédé un penalty sur une faute de main (57e).

The vast majority - more than 90 percent - of urine samples of both mothers and children showed detectable concentrations of all three classes of chemicals, with the exception of triclosan which was present in approximately 70 percent of samples.

The effects of the chemicals on oestrogen may be why girls are more affected. And with every doubling of mothers' urine concentrations of triclosan, girls started menstruating one month earlier.

Most had no high school diploma and lived below the USA federal poverty threshold.

There is growing concern among some researchers about the effects...

Prof Harley said: "But we always knew we would have the opportunity to examine other chemical exposures". And one limitation of the study is that researchers lacked data to know if girls going through puberty might be more likely to use these personal care products, and be directly exposed that way, the study authors note.

The study, published in the journal Human Reproduction, examined chemical levels including phthalates, parabens and phenols.

Real, independent, investigative journalism is in alarming decline. Many publications facing an uncertain future can no longer afford to fund it.

We do not charge or put articles behind a paywall.

Every penny we collect from donations supports vital investigative and independent journalism.

Conseillé:

  • HC rejects PIL against Kedarnath, calls it publicity stunt

    HC rejects PIL against Kedarnath, calls it publicity stunt

    Of late, after another group filed a PIL seeking a ban on the film, taking objection to its content for affecting the sentiments of Hindus, the Gujarat High Court made a decision to take strict action, albeit against the organization.
    The first country in the world to make all public transport free

    The first country in the world to make all public transport free

    Now, from the start of 2020 all tickets will be abolished, saving on the collection of fares and the policing of ticket purchases. The transport policy was formulated in response to the traffic congestion being experienced in landlocked Luxembourg.

    Fils de légende de la Formule 1 a dépassé son père

    Nul doute qu’elle offrira à Mika la meilleure option pour poursuivre sa carrière dans le sport automobile. Et il n'est pas Andrei Arshavin, pour répondre à la question sur les attentes facilement et naturellement.
  • Boy overturns Colorado town's ban on snowball fights

    Boy overturns Colorado town's ban on snowball fights

    Further bolstering his position, Dane presented the board members with 20 letters from his classmates, urging officials to overturn the almost century-old ban.
    PSG and Brazil forward Neymar hints at future move to Premier League

    PSG and Brazil forward Neymar hints at future move to Premier League

    Neymar became the most expensive player in history after joining PSG from Barcelona previous year in a deal worth nearly £200million.

    Votre voiture doit être dans un état impeccable

    En ce qui concerne la sécurité, le choix des pneus parfaitement adaptés est extrêmement. Mais tout d’abord, vous devez savoir où trouver les pièces compatibles avec votre voiture.
  • Comment devenir webmaster?

    Il est amené à rajouter des textes, des images, des vidéos. Il procède également à l’analyse du trafic.
    After two-year journey, NASA Osiris-Rex spacecraft arrives at asteroid Bennu

    After two-year journey, NASA Osiris-Rex spacecraft arrives at asteroid Bennu

    Soon an image of the asteroid appeared on the mission control screens: a diamond-shaped body with a rough, speckled exterior. It is the first USA attempt to gather asteroid samples for return to Earth, something only Japan has accomplished so far.
    Harmanpreet Kaur, Smriti Mandhana tell BCCI they want Ramesh Powar as coach

    Harmanpreet Kaur, Smriti Mandhana tell BCCI they want Ramesh Powar as coach

    Both Kaur and Mandhana have praised Ramesh Powar in their emails, saying that he has imbibed a winning mentality into the squad. Sir Ramesh Powar not only improved us as players but also did motivate us to set targets and challenge our own limits.
  • Demi Lovato returns to jiu-jitsu after overdose

    Demi Lovato returns to jiu-jitsu after overdose

    She continued, "I'm sorry my sister is handsome , she's alive and she's conquering a lot of really hard s-". She's even getting back in her fighting shape, according to her recent post online.
    Abu Dhabi Test: New Zealand to start day four on 26-2

    Abu Dhabi Test: New Zealand to start day four on 26-2

    Shafiq brought up his 12th Test ton with a sharp single off Somerville before falling leg-before to Patel to a straight delivery. Incidentally, Pakistan got the same first innings lead in the first test at the same venue before losing narrowly by four runs.
    Grâce à lui, les boules de neige sont autorisées

    Grâce à lui, les boules de neige sont autorisées

    Depuis qu'il avait appris l'existence de cette " loi d'un autre temps " il y a un mois et demi, Dane Best ne cessait d'en parler. Les boules de neige faisaient techniquement partie de cette prohibition.


Populaire

Mike Ashley understood to have received four bids for Newcastle
Newcastle got off to a dismal start to the season, only for a three-game winning run in November to allow them to drag themselves out of the relegation zone.

Embiid's double-double powers 76ers past Knicks 117-91
He didn't stick around to offer his usual quips and one-liners to the media - Embiid split to catch up with his family. Fultz had said he wasn't hurt and the decision came a day after he appeared to lose his backup point guard spot.

British MP Lloyd Russell-Moyle: I am HIV Positive
He continued: "I am leading this debate today because we are in many ways at a juncture in the fight against HIV and Aids". Young girls are often particularly at risk - 75% of new HIV infections in sub-Saharan Africa are among girls aged 15-19.

KGF trailer 2 Hindi: Watch Yash`s `angry and rugged` avatar
The film will be clashing with superstar Shah Rukh Khan starrer " Zero " which is helmed by Aanand L Rai. The much ambitious project would be released in four languages- Hindi, Tamil, Telugu, and Kannada.

Waldo County General Hospital receives national award
The University of Michigan's Michigan Medicine was awarded as a top teaching hospital, its fifth since 2010. The selection of Top Hospitals was based on surveys from almost 1,900 hospitals across the nation.

Pakistan's Shah fastest to 200 Test scalps
Pakistan had hopes of an emphatic win once Shaheen Shah Afridi had Ross Taylor caught hooking for 22 with the total at 60-4. But BJ Watling resisted with 77 not out, delaying his record until the second innings.

" Gilets jaunes ": " il faut accélérer la baisse des impôts ", juge Le Maire
Face à cette crise, "il faut accélérer la baisse des impôts". " Moins d'impôts, moins de dépense publique ", a-t-il proposé en réitérant que c'est la condition de la prospérité pour tous les Français.

Central Intelligence Agency briefing on Khashoggi solidifies senators’ view of Prince Mohammed’s complicity
However, a USA official told NBC that Khalid is not expected to be expelled from the country and would continue on as ambassador. Lindsey Graham , R-S.C., told reporters after an hourlong briefing by Gina Haspel , the Central Intelligence Agency director.

Kurt Busch signs with Chip Ganassi Racing after leaving Stewart-Haas
Chip Ganassi Racing and Kurt Busch have confirmed that Busch will join the program beginning next season. After running seven races in 2000, he went full-time in the series a year later.

Stérile, mais loin d'être malheureux
Pour détendre l'atmosphère, Keen'V y est allé d'une note d'humour: " En même temps, vu ma gueule, vaut mieux pas que j'en aie! Après avoir d'abord évoqué une différence d'âge en 2007 à nos confrères de Closer , Keen'V est désormais prêt à reconnaître son problème de fertilité.